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7 Best Car Wash Soaps – (Reviews & Guide 2021)

Besides a water hose and microfiber towels, you’ll need the best car wash soap to help you fight off the dirt. For every car owner, there comes a time when they can’t put off washing their cars any longer. While some prefer to pay for an automatic car wash, others decide to wash their cars at home. If you’re in the second group, or you’re interested in starting this DIY practice, there are some tools you’ll need in order to get professional-looking results.

If you don’t already have a favorite brand, it’s time to find a suitable soap. To help you out, we created the car wash soap reviews and compiled a comprehensive buying guide. In it, you can learn how to choose the ideal soap for your car. Let’s begin!

See The Quick Comparison Chart

Benefits of Washing Your Car with a Soap

If you’re not sure whether you need to get a separate product for your car, or you can simply use a different type of soap, we’d recommend opting for a specialized car wash soap. Here are the reasons.

1. Sparkling Clean Car Without Damage

Best Car Wash SoapSome people try washing their cars with liquids they already own, like a multipurpose cleaner or dish soap. More often than not, they end up damaging their car’s paint surface. These soaps are simply too abrasive for the easily damaged car paint. If you think of it, it does make sense – dish soap is made strong enough to remove a caked-on week-old lasagna from a dish. To achieve that, it needs to be very tough and rather abrasive. In fact, most cleaning agents you have at home are way too abrasive for the vulnerable car paint, and substances like car waxes and sealants. On the other hand, car wash soaps are formulated so that they not only keep your paint job safe but in fact bring out the best out of your car paint.

2. Perfect for Pre-Wax Paint Maintenance

If you’re enthusiastic about having a gorgeous car, you know how much of a difference car wax makes. However, you should never put wax on a car that wasn’t well washed with a good, specialized agent that removes all of the particles of dust, grime, and twigs. If you skip this necessary pre-wax maintenance, you’ll end up with a car full of scratches and swirl marks. Car wash soaps are made with the specific goal to remove all of the debris that may cause trouble, and they’re very successful at preventing waxing scratches.

3. Cheaper (and Cleaner) than Automatic Car Washes

Automatic car washes are quite convenient. However, they can get very expensive quickly. In fact, you can get a 20-washes bottle of car soap for the price of one automatic car wash, and a solid pressure washer for the price of ten automatic washes. So, after only three months’ worth of car washes, you’ve already saved some money, and you still have everything you need for a perfectly clean car.

Besides, automatic car washes can often have unsatisfactory results, especially if the facility isn’t one of the more reputable ones. In automatic car washes, you get what you pay for, so a cheap automatic car wash frequently needs to end in you re-doing some parts of your car anyway. Why not do it yourself, and do it well the first-time round?

Best Car Wash Soaps Comparison Chart

PRODUCTDETAILS
Mothers 05602 California Gold Car Wash - 1 Gallon

Mothers 05602 California Gold Car Wash – 1 Gallon

  • Price: $$ per fl oz
  • Customer Rating: 4.5
  • Volume: 128 fluid ounces
  • Type: Concentrate
  • Dilution: 1 fl oz per gallon
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Griot's Garage 10866 Car Wash (Brilliant Finish) 64oz

Griot’s Garage 10866 Car Wash (Brilliant Finish) 64oz

  • Price: $ per fl oz
  • Customer Rating: 4.4
  • Volume: 64 fluid ounces
  • Type: Concentrate
  • Dilution: 1 fl oz per gallon
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Turtle Wax T-472R ICE Car Wash - 48 oz.

Turtle Wax T-472R ICE Car Wash – 48 oz.

  • Price: $$ per fl oz
  • Customer Rating: 4.7
  • Volume: 48 fluid ounces
  • Type: Concentrate with wax
  • Dilution: 1 fl oz per gallon
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Optimum (NRWW2012G) No Rinse Wash & Wax - 1 Gallon

Optimum (NRWW2012G) No Rinse Wash & Wax – 1 Gallon

  • Price: $$$ per fl oz
  • Customer Rating: 4.7
  • Volume: 128 fluid ounces
  • Type: Concentrate with wax
  • Dilution: 0.5 fl oz per gallon
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Mothers 05674 California Gold Carnauba Wash & Wax - 64 oz.

Mothers 05674 California Gold Carnauba Wash & Wax – 64 oz.

  • Price: $ per fl oz
  • Customer Rating: 4.5
  • Volume: 64 fluid ounces
  • Type: Concentrate with wax
  • Dilution: 1 fl oz per gallon
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Adam's Car Wash Shampoo -pH Neutral Soap - 1 gallon

Adam’s Car Wash Shampoo -pH Neutral Soap – 1 gallon

  • Price: $$$ per fl oz
  • Customer Rating: 4.6
  • Volume: 128 fluid ounces
  • Type: Concentrate
  • Dilution: 1 fl oz per gallon
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Meguiar's G7101FFP Gold Class Car Wash - 1 gallon

Meguiar’s G7101FFP Gold Class Car Wash – 1 gallon

  • Price: $$ per fl oz
  • Customer Rating: 4.7
  • Volume: 128 fluid ounces
  • Type: Concentrate with additives
  • Dilution: 1 fl oz per gallon
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Best Car Wash Soap Reviews

1. Mothers 05602 California Gold Car Wash – 1 Gallon

Mothers 05602 California Gold Car Wash - 1 GallonMothers create one of our favorite options – their California Gold car wash. This mid-range product is a pure concentrate of car wash soap, meaning it contains no waxes, sealants, or other additives. It comes in a variety of different bottle sizes, ranging from 16 fl. oz. to a full gallon, which is by far the cheapest option considering the price per ounce. You need one ounce per a gallon of water. This product has a neutral pH, so it will never damage your car paint, no matter how frequently you use it. The sudding properties are excellent, and in fact, this product creates a very thick foam which will help you remove the toughest dirt without too much elbow grease. It’s also a very slick soap, so it’s easy to use and treat your car with it. This car wash soap doesn’t have a strong smell, so it won’t bother you while you wash your vehicle. However, it does take a bit of existing car wax away. However, that only means that it’s strong enough to remove any kind of dirt.

Pros

  • Creates strong and rich foam
  • Doesn’t have a strong smell

Cons

  • Can take a strip a bit of your car wax

2. Griot’s Garage 10866 Car Wash (Brilliant Finish) 64oz

Griot's Garage 10866 Car Wash (Brilliant Finish) 64ozOur next pick comes from the popular car product manufacturer Griot’s Garage. This time, we’re talking about their bottle of hot pink Brilliant Finish Car Wash. Even though Griot’s Garage is a reputable and popular company, their car wash is among the most affordable on the market. This product comes in a bottle of 64 fl. oz, which is enough for more than 20 car washes, as the concentrated product should be diluted 1 fl. oz. per a gallon of water. While this liquid doesn’t contain car wax, it does have some special brighteners, which will help make your car’s color pop. Black car owners, don’t worry – this product will not change the color of your car. In fact, it will only make the color shinier. This pH-balanced product will not cut through your wax either, so your car won’t suffer unnecessary damage in between waxing. Finally, Griot’s take pride in the rich suds this product creates. It really does create great foam, so you’ll wash any dirt and grime with ease. However, it’s not particularly strong against oily and greasy spots.

Pros

  • An affordable product in a 64 fl. oz. bottle
  • Leaves your car looking shiny

Cons

  • Doesn’t clean oily and greasy spots like tree sap easily

3. Turtle Wax T-472R ICE Car Wash – 48 oz.

Turtle Wax T-472R ICE Car Wash - 48 oz.Our next pick comes from the good old Turtle Wax. This concentrate with additives comes at a middle-range price. However, it’s well worth its price as it’s a combination car wash and wax. This product is named ICE after its Ice smart shield technology. The synthetic blend of shine enhancers works to keep your wax in top shape, renewing it with every car wash. The result is a clean car that’s not only shiny, but protected from pollutants like twigs, dirt, stones, and tree sap. This pH-balanced product doesn’t strip your wax, but instead, renews it. Still, remember that a washing product with additional wax still doesn’t replace regular waxing entirely, though your car may need waxing less frequently. The product comes in a 48 fl. oz. bottle and you need 1 fl. oz. of it per a gallon of water. Such dilution ratio makes one bottle last at least 16 car washes. This is not the product that produces the most foam, but it does create sufficient suds for safe washing. It smells very nice as well.

Pros

  • Combination concentrate soap with wax
  • It has a very pleasant smell

Cons

  • Doesn’t create a lot of foam

4. Optimum (NRWW2012G) No Rinse Wash & Wax – 1 Gallon

Optimum (NRWW2012G) No Rinse Wash & Wax - 1 GallonOur next pick is a rinse-free car wash made by Optimum. This product is a combination of concentrated car wash and car wax which you don’t need to rinse after washing, so it’s a good pick if you’re at a location with limited water access. Furthermore, this is a very ecologically friendly option, as no soapy water goes down the drain, or eventually into rivers and lakes. We chose a 1-gallon bottle, but you can also get an 8 fl. oz. and a 32 fl. oz. container. Even though at first glance, this product seems expensive, that’s not actually the case. That’s because, unlike most other car washes, you only need 0.5 ounces of the product for a gallon of water. As a result, a gallon bottle of Optimum No Rinse Wash & Wax lasts as long as two gallons of another car wash soap. The product has a pleasant smell, somewhat similar to a melon. This product can help keep your existing car wax in top condition, but it’s not a replacement for regular waxing with a separate product. Sometimes, this product can cause some hazing. If this happens, wipe your car again with a dry microfiber towel.

Pros

  • It has a very pleasant smell
  • Rinseless – uses less water and is very eco-friendly

Cons

  • It can cause micro marring or hazing if not buffed well

5. Mothers 05674 California Gold Carnauba Wash & Wax – 64 oz.

Mothers 05674 California Gold Carnauba Wash & Wax - 64 oz.Mothers make our next pick – California Gold car wash soap with the addition of carnauba wax. This 64 fl. oz. bottle is very affordable, and in fact, it’s one of the cheapest options offered by a reputable brand such as Mothers. Since 1 ounce of the product should be diluted in a gallon of water, this bottle can serve you for over 20 car washes, which is amazing considering the low price. This car wash soap is pH neutral, which means it will not damage your car wax. In fact, it does contain a bit of natural carnauba wax, which will nourish your car paint and keep it protected. As with other concentrate car washes with additives, this product is not a replacement for regular waxing, but it will make your existing layer of wax more durable and resilient. Additionally, the product will give your car a deep, rich shine just like carnauba wax does. When it comes to its cleaning power, it does wash moderately well. However, it doesn’t foam up very much, so you should be careful not to scrub your car too hard when removing dirt.

Pros

  • A rather affordable product
  • Contains natural carnauba wax

Cons

  • Doesn’t create rich suds

6. Adam’s Car Wash Shampoo -pH Neutral Soap – 1 gallon

Adam's Car Wash Shampoo -pH Neutral Soap - 1 gallonYou’ve probably heard of the car product producer Adam’s. This company proudly makes its products in the USA. We chose their basic product Car Wash Shampoo, a concentrated car wash that leaves your car sparkling clean. This particular product comes in three sizes: 16 fl. oz, a gallon bottle, and the extraordinary 5-gallon barrel with a dispenser. When it comes to the price, this product is slightly more expensive than the average car wash soap. However, the thick, rich foam it creates is well worth the extra money. Though the manufacturer doesn’t specify the exact dilution ratio, our estimate is that you need about 1 fl. oz. of the product for a gallon of water. This soap is strong enough for great cleaning performances, but also gentle enough not to damage your plastic and rubber trims. It doesn’t contain any additives, so you can expect it to provide a perfectly clean finish to your car. It’s pH neutral so that it won’t strip any of your existing car wax. One of the most remarkable things about this product is its lovely, fruity smell.

Pros

  • It has a very pleasant wild berry smell
  • The product creates very thick and rich suds

Cons

  • The 16 fl. oz. container is flimsy

7. Meguiar’s G7101FFP Gold Class Car Wash – 1 gallon

Meguiar's G7101FFP Gold Class Car Wash - 1 gallonOur next pick is made by the well-known manufacturer Meguiar’s. This concentrated car wash soap provides some paint conditioning, but the manufacturer doesn’t specify what exactly it contains. Still, the formula is biodegradable and eco-friendly. Sometimes, if the product dries too quickly, it can cause some hazing, which is easily buffed out but still requires extra work. This soap has a very mild fruity scent that won’t bother you while you’re working on washing your car. The formula is pH neutral, so it won’t damage your wax. The product comes in a bottle with a gallon of the liquid. It can be used both in a bucket and in a foam cannon. Mix 1 fl. oz. with a gallon of water, or dilute the product 5:1 if you’re using a foam cannon. When it comes to foaming and cleaning power, this soap creates rich, thick suds which will help you remove dirt and grime. However, it won’t remove tough oily stains without some elbow grease.

Pros

  • A very mild scent which won’t bother you while you work
  • Conditions the paint without adding wax

Cons

  • It can cause some hazing which can be buffed out

Car Wash Soap Buying Guide

Car Wash Soap ReviewsWhen you first look for car wash soaps, you will probably be surprised by the number of different products readily available for customers like you. Frankly, it can be quite confusing and intimidating, especially if you’re not sure what exactly you’re looking for. Here’s a handy guide through all the things you should consider before making your pick of a car wash soap.

1. Type

Essentially, there are three main types of car wash soaps you’ll encounter in your search:

1.1. Concentrated soap

This is the most common type of car wash soap on the market. As the name suggests, these soaps come in concentrated formulas that you need to dilute in water before use. Typically, you should dilute 1 ounce of the liquid in a gallon of water. This makes them very economical. There are different formulas of concentrated soap, some promising shine, and the others tackling debris and contaminants. In general, this type of car wash soap is the most widely used, and any brand does a fine job of basic washing without damaging your paint or stripping car wax.

1.2. Soap with additives

Some car wash soaps come with additional functions beside car washing. The most common additive is car wax, which stays on your car paint after rinsing. The waxy residue these soaps leave is definitely not as strong as standalone car wax, but it does a good job maintaining your car in between waxing. This type of soap can come both concentrated and pre-diluted.

1.3. Rinseless or waterless soap

These formulas are made so that you don’t need water, or you need far less water than you would for a typical car wash. The rinse-free and waterless car soaps are generally just as good at cleaning, but you need to be a bit more careful because you don’t rinse off large debris before applying soap, so scratches are somewhat more likely. This is a perfect pick if you need to wash your car in a remote area, when you’re on the go, or if you don’t have a convenient water source in your yard.

2. Foaming

FoamingOne of the most relevant physical properties of car wash soaps is how much foam they can create. The bubbles are exactly what removes the dirt from the surface of your car. When your product creates many high-quality bubbles, you don’t have to scrub as hard to take gunk off your car paint. You will still need to put in some elbow grease when removing caked in bird droppings, but anything else you will be able to simply rinse off.

This is important because scrubbing during a car wash is the number one cause of scratches and marks on cars. With a soap that foams well, you don’t have to scrub at all, maintaining the shine of your car for years to come.

3. The pH of the Soap

There are many theories why a more alkaline or more acidic car wash soap may be beneficial to your car. In fact, there are some kinds of dirt, like oils, tree sap, and bird droppings, that are easier removed with alkaline soaps. On the other hand, you may want to go with an acidic solution if you’re struggling with salts and rust. However, when using too much acidity or alkalinity, you risk damaging your car’s paint and its clear coat. Neutral pH doesn’t work specifically well for a particular kind of dirt, but it does offer good results whatever it is you’re tackling with it. So, the safest way to go for general cleaning needs is always the pH-neutral soap.

4. Environmentally Friendly

The times when the eco-friendly option was the less efficient one are long past. Today, some of the best products around are the most eco-friendly ones. That’s why it doesn’t really matter which you choose, at least when it comes to cleaning power.

Unlike some of the best car engine degreasers, car wash soaps don’t need as much degreasing power, so they’re typically not as damaging to the environment. Since most of the product ends up in the gutter, it’s important to choose the eco-friendly option.

5. The Price

Of course, the price is a factor you’ll naturally consider. However, we still have a couple of tips. First of all, when it comes to car wash soap, the most expensive does not automatically mean objectively the best. You should consider cheaper products alongside the more expensive ones, and evaluate them for their real properties and user reviews.

Secondly, car wash soaps come in varying bottle sizes, but also dilution ratio. When calculating the actual price of the product, consider how many gallons of soapy water you can make, rather than how many ounces you get in the bottle. Then, calculate the price of the product per gallon of diluted soap. The actual prices may end up looking very different than they do at first glance.

Equipment You Need to Wash Your Car

Equipment You Need to Wash Your CarThere are various things you’ll need to wash your car at home. However, there’s no definitive set you’ll need, so you can substitute one item for another. We’ll give you a broad overview of the equipment you’ll need to wash your car at home.

1. Two Buckets

One of the tools you can’t substitute for anything else is two typical 5-gallon buckets. While they don’t necessarily have to hold exactly 5 gallons, look for some of approximately similar size. You will need one bucket for your soapy water, and another for rinsing your cloth in between dipping into the soap.

If you want to use a foam cannon instead of soap in a bucket, you don’t need either of the buckets. You simply spray the foam over the surface of your car and proceed to scrub with your cloth, mitt, or sponge.

2. Cloth, Mitt, or a Sponge

Next, you’ll need something to scrub the soap with. In order to keep the surface of your paint scratch-free, you should get a soft cloth without stiff edges, or a sponge without the harsh side. You can also get a wash mitt. We recommend getting a microfiber cloth or mitt. The advantage of microfiber is that it’s soft but dense enough, so no particles get stuck in the material itself. This can be a big problem with sponges, as you may unknowingly scratch your car with a twig which got stuck inside the sponge fibers when you last washed your car. Pay attention to regularly and thoroughly rinse your sponge, mitt, and cloth.

3. A Pressure Washer or a Garden Hose

You will need a way to rinse your car with water before and after soaping. For this, you can use either one of the best pressure washers for cars or a garden hose. If you’re using a power washer, you’ll need a wide-angle nozzle which will help you distribute the pressurized water across the surface of your car evenly. On the other hand, you can also get a similar nozzle for your garden hose, but it’s not necessary. The advantage of pressure washers is that they use less water for the same job, and they have more power to remove grit and dirt stuck to the surface of your vehicle.

4. Drying Cloth

If you leave your car to dry in the sun, you’ll end up with unsightly water spots. Because of that, you should dry your vehicle with a drying cloth. Like with the other cloths you use for drying your car, pick soft cloth without harsh edges. We recommend going for a microfiber cloth or a shammy. With a shammy, you should dip it in water and squeeze out excess water. Shammies are best at picking up water when they’re moist.

5. Your Washing and Detailing Products

Finally, you’ll need your car wash soap in order to wash your car and your car paint sealant or wax for additional care and long-lasting shine.

How to Properly Wash a Car?

How to Properly Wash a CarThis time, we’ll tell you how to wash the exterior of our car. Consult our article about car upholstery cleaners to learn how to take care of your car interior. Once you have everything you need to wash your car, you can get right on it, and make your vehicle sparkle and shine!

1. Set-Up

Park your car on a convenient spot inside in a garage, or outside in your yard. Choose a place with access to water and a gutter. Ideally, your spot has a piece of pavement to park on. Gravel or soil is not ideal because dirt and stones may get stuck right back on after you’re done with the washing.

Set up your pressure washer or garden hose, and fill two buckets with around 3 gallons of water. Calculate how much car wash soap you need to dilute in one of the buckets, considering the amount of water it holds. A typical bucket holds 5 gallons of water.

Roll your car windows up, and make sure your doors and trunk are well closed.

2. Pre-wash Rinse

Before you can start applying soap, you need to rinse your car with water. You should aim at spraying off as much debris and gunk as possible. This is easiest done with a pressure washer. This type of machine has the power to remove dirt that’s stuck onto the surface of your car. If you’re using a pressure washer, use pressure lower than 2000 PSI, and a wide-angle nozzle tip. Try to remove all of the bits such as mud, insects, twigs, and stones as thoroughly as possible. Leaving some, you may pose a risk of scratching your car while brushing with soap.

Whatever you do when washing your car, be it rinsing or soaping, work your way from the top down. So, rinse the roof of your car first, and then move towards the trunk and the hood. The only exception is if you rinse your wheels first, which we recommend.

3. Soap

It’s time to soap your car. Simply dip your cloth, sponge, or mitt into the soapy water and start cleaning gently, with circular movements. If you feel that there isn’t enough product on your car, pour a little bit of the mixture over the area you’re working on. The more foam you can create, the better the cleaning.

Once you’re done with an area of one or two feet, it’s time to rinse your mitt, sponge, or cloth. Of course, if your tool gets black from dirt before that, rinse as soon as you notice that. Do the same if in your cloth you notice a stone, twig, or anything else that may result in a scratch. The frequency of rinsing depends on how dirty your car is. Rinse your tool in the second bucket which contains only water, and then dip it into your soapy water again.

As with rinsing, work your way from the top downwards.

4. Rinse

After you’ve scrubbed everything off, it’s time to rinse the foam off your car. Take your pressure washer or your garden hose, and rinse your car with clean water. Rinse downwards, starting at the roof of your car. If you’re using a pressure washer, try to hit the car at a 45-degree angle, as this will ensure the soap slides off smoothly down your car. Once you’ve rinsed everything, you shouldn’t see any foam left on your car. It’s time to dry your car. Take your time to rinse as long as you need to. After it dries, leftover foam can leave unsightly white marks on your car.

Pat dry your vehicle with a clean, soft microfiber towel. Alternatively, you can use a shammy, but you should dip the shammy in water and squeeze the water out of it, as shammies best absorb water when they’re moist. When you get most of the water off your car, leave it in the sun to dry completely.

5. Detail

Once your car is properly dry, you can make it extra shiny and give it long-lasting protection with car wax or sealant. In typical conditions, you only need to wax your car once a month, or even less. Most car wash soaps are formulated in a way that cleans your car but doesn’t damage the layer of car wax, so you can feel free to (and in fact, you should) wash your car in between waxing. When your layer of wax settles, you’ll feel like you have a completely new vehicle.

Important Things to Consider in Car Washing

Important Things to Consider in Car WashingHere are some additional tips which will ensure you end up with a sparkling clean car.

1. Pick the Right Weather

Of course, it’s hard to wash your car while it’s raining or snowing, unless you have a garage. In the winter, wash your car when it’s the warmest during the day, and avoid days with snowfall, even if it’s just a light drizzle. These will inevitably leave a mark on your car.

However, a very hot summer day is not ideal, either. If the sun is too strong, your soap and water will dry on your car’s surface before you can manage to rinse it off. The unsightly result of this are usually white water and foam spots. To avoid this, you can pick a mild day, or wash your car in the evenings or early mornings. Alternatively, you can park your car in the shade, out of direct sunlight.

2. Pressure Washing

Even home use pressure washers can be too powerful for car washing. If you use a pressure too strong, you may damage your car paint, or even worse, break a window or a mirror. To avoid this, you should make it a point never to use pressure higher than 2000 PSI when washing your car with a pressure washer. For additional safety, you can use a nozzle tip with a wide spraying angle (typically the green or the white-colored nozzle). The farther away you hold the nozzle, the lower the pressure of the water is.

3. Don’t Overlook the Underside

Though the primary goal of a car wash is primarily to return shine to your vehicle’s body, it’s not the only important thing. You shouldn’t neglect the underside of your car either. This is especially important in the winter when your car is in constant contact with road salts. The suspension parts, your brakes, driveshafts, and your wheels should all receive cleaning from time to time. If you’re not aiming for a particularly shiny underside, it’s enough just to spray these parts with clean water until no more debris and dirt can be seen in the seeping water.

4. Don’t Re-use Soapy Water

At the end of your car wash, you will probably have a bucket with a lot of the diluted product left in it. Don’t fall for the temptation to re-use the same soapy water for your next wash. The amount of saved product isn’t worth the danger that re-using water brings. No matter how thoroughly you rinse your cloth before dipping it into soap, some dirt and grit always reach the soap. Contaminated water can grow new bacteria, or you may pick up a stone from your last wash. Either way, you may end up ruining your car paint trying to save a tiny amount of soap.

FAQ About Car Wash Soaps

1. Can I use dish soap to wash my car?

It’s a good personality trait to try and save money wherever you can. However, washing your car with dish soap is not a way to do it. Dish soap is an abrasive substance that’s made strong enough to remove caked-on food and grease. As you can imagine, that’s a rather strong product. When you use this product on your car, the first thing it does is eat up your car wax. If you don’t have car wax, you’re in trouble – it’s going to strip away your paint’s clear coat. As a result, your paint will be exposed to oxygen, accelerating the oxidation process. The spots where your clear coat was eaten away by dish soap will change color, and become rusty with time. On the other hand, your car’s rubber parts like trims will lose their flexibility and become rigid and brittle. The more you use dish soap, the worse these effects will become.

Car wash soaps are formulated specifically to nourish your car paint, car wax, and plastic and rubber elements. They will never damage your car because they’re intended to remove dirt without eating away any paint, sealant, or wax. Besides, a gallon of car wash soap is rather cheap. If you wash your car with dish soap, sooner or later you will need big repairs on your car, so we’d call that wasting instead of saving money.

2. How long does a gallon of a car wash soap last?

This is an easy calculation, but we need to make two assumptions. One is about the dilution ratio that your chosen product’s manufacturer recommends, and the other is about the frequency at which you wash your car.

So, let’s say you wash your car once every two weeks. Your car soap’s instructions say that you need 1 fl. oz. for every gallon of water. For a typical car wash, you need 2 or 3 gallons of soapy water. So, for every car wash, you need at most 3 fl. oz. of product. If you get a gallon bottle, you have 128 fl. oz. in it, making you set for the next 42 car washes. If you wash your car once every two weeks, or two times a month, you’re good for the next 21 months.

In other words, a gallon of car wash soap can last almost two years of regular car washing!

3. Do I need to wax my car after every car wash?

Absolutely not. At least not if you use a car wash soap and not a dish soap to wash your car. Car wash soaps are formulated so that they don’t strip away your layer of wax, and soaps with wax additives can help keep your wax in top condition.

How frequently you need to apply wax really depends on the type of car wax you use. Natural carnauba wax requires more frequent application, while some synthetic waxes can last almost six months without the need for a re-do.

The best way to know whether your car needs a new layer of wax, or you’re good until the next wash is by doing the water beading test. Pour some water over your car. If most of the water slides right off, with the remaining water beading up into large water pearls, your wax is good to go. However, if water doesn’t slide, or it stays in many little droplets and lingers on your car, you should apply a new layer. Of course, make sure your car is completely clean and dry before applying wax!

Wrap Up

Having a clean, shiny car is a joy. However, bringing it in for frequent automatic washes can drain your funds. Yet, if you have a yard, you’re in luck – washing your car at home has never been easier. With so many great options available on the market, picking the best car wash soap for your car is not an easy feat. That’s why we’ve decided to compile our unbiased car wash soap reviews, complemented with a detailed buying guide in which you can learn everything you need to know before making a purchase.

We hope this buying guide answered all of the questions you had about choosing the right car wash soap. If you have any questions or issues left, don’t hesitate to leave us a message below. We’ll get back to you as soon as we can, and help you keep your car sparkling clean!

About Steve Johnson

Steve Johnson worked as a traveling salesman, traversing the country for the bigger part of the year. On the road, he encountered all sorts of problems with his car, from maintenance to engine issues. One day he decided that enough is enough, so he started learning and researching car related topics, solving basic car problems on his own. He summed up everything he learned into guides and blogs for others to learn the way he did.

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