Snow foam is a crucial component of any pre wash regimen. Generally, it can only be done with a pressure washer, but some snow foams can also be used in a foam sprayer, suck as the IK Foam Pro 2. A great snow foam will help to break up road grime and dirt, allowing a large portion of it to be removed before you carry out a touchless wash.

Whilst it isn’t always necessary to carry out a snow foam pre wash (other options are available), when snow foam is needed, it’s important to know what the best ones are so that you can get a great pre clean, whilst also protecting the finish of your car.

Regardless of the snow foam you choose, the best ones will share the same characteristics:

1) The snow foams also should not impact any waxes or sealants that are on the paint work.

2) They effectively remove the dirt and grime that is on the car.

3) They are non-caustic and will not cause any permanent damage to the car.

Autoglym PB002.5 Polar Blast, 2.5 Litres , White
Gtechniq Auto W4 Snow Foam Car Wash and Degreaser For Cars, 100% Biodegradable Non-Caustic Pre-Wash Snow Foam Cleaner, 1L
Bilt Hamber Auto Foam (5 Litre)
Autoglym PB002.5 Polar Blast, 2.5 Litres , White
Gtechniq Auto W4 Snow Foam Car Wash and Degreaser For Cars, 100% Biodegradable Non-Caustic Pre-Wash Snow Foam Cleaner, 1L
Bilt Hamber Auto Foam (5 Litre)
Autoglym PB002.5 Polar Blast, 2.5 Litres , White
Autoglym PB002.5 Polar Blast, 2.5 Litres , White
Gtechniq Auto W4 Snow Foam Car Wash and Degreaser For Cars, 100% Biodegradable Non-Caustic Pre-Wash Snow Foam Cleaner, 1L
Gtechniq Auto W4 Snow Foam Car Wash and Degreaser For Cars, 100% Biodegradable Non-Caustic Pre-Wash Snow Foam Cleaner, 1L
Bilt Hamber Auto Foam (5 Litre)
Bilt Hamber Auto Foam (5 Litre)

Last update on 2022-09-29 As an Amazon Associate I earn from qualifying purchases.

Autoglym Polar Blast

Autoglym Polar Blast is part of their Polar series (which also includes Polar Wash and Polar Seal).

It is one of the few snow foams that I’ve used that can also be used with the aforementioned IK Foam Pro 2, to great success. Polar Blast comes in a 2.5 litre container, with the instructions to use 100ml of Polar Blast with 900ml of water. At that dilution ratio, you’ll get 25 washes out of it. This might not seem like a lot, but if you’re washing your car every fortnight, then you’re getting nearly a year out of it.

If you’re using it in the IK Foam Pro 2, then I’ve found that adding in 15ml of Polar Blast to 1 litre of water works extremely well.

At both dilutions, the snow foam was nice and thick and clung to the paint for a reasonable period of time. It looked as though the road dirt was melting off of the paintwork. Whilst testing it, I was curious about how it would affect the UHD Wax that was on the panel. I’m glad to say that the pH neutral claim from Autoglym was correct. It did not cause any degradation of the UHD Wax and it lifted off a significant amount of dirt. The remaining dirt on the car was really loose, and came off with ease with very light agitation.

Autoglym have also produced a snow foam cannon which works great with Polar Blast, as well as all the other snow foams on this list.

Last update on 2022-09-29 As an Amazon Associate I earn from qualifying purchases.

Sale
Autoglym PBKIT Polar Blaster
  • Unique foam gun designed to work in harmony with all Autoglym Polar Series products

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Gtechniq W4 Citrus Foam

Gtechniq W4 Citrus Foam is an interesting combination. Not only is it a snow foam, but it also contains a citrus degreaser in it as well. This effectively doubles up on the cleaning power of the snow foam instead of having to apply a citrus based cleaner and then a snow foam on it thereafter.

The dwell time on this seemed a bit short at first, with the suggested maximum dwell time being 5 minutes. I was in two minds about if this would be long enough to tackle the road film. I can say that it definitely was long enough to help break this up considerably. This is no doubt thanks to the citrus cleaners in it. The clean was brilliant, and really made removing the remainder of the dirt extremely easy. If you have Gtechniq coatings on your car, this is the option I would go for. It is also non-caustic, meaning exposed metal on your car won’t be damaged.

It is a bit more expensive than other brands, and comes in 1litre and 5litre sizes. I would say that the 5litre version offers the best value for money over all.

One thing I thought was a bit off though was that instructions wise, it says to add 2.5cm of the product into a foam cannon. This doesn’t take into account though the kind of foam cannon that is being used though, so it the dilution ratios might take a bit more trial and error until you get the results you’re happy with.

Gtechniq Auto W4 Snow Foam Car Wash and Degreaser For Cars, 100% Biodegradable Non-Caustic Pre-Wash Snow Foam Cleaner, 1L
  • USE BEFORE CAR WASHING TO LOOSEN DIRT - apply to paint and let the thick foaming agents and degreaser lift off stubborn dirt and road grime to make car washing much safer, easier and quicker.

Last update on 2022-09-29 As an Amazon Associate I earn from qualifying purchases.

Bilt Hamber Auto Foam

Bilt Hamber offer a few pre wash products, of which Auto Foam is my favourite. From the off, it should be noted it is a bit more expensive than the Polar Blast and W4 also discussed on this page. However, it needs to be taken into account that it is a 5 litre bottle that is on sale, so that does make up for it.

Unlike  the other two snow foams on this list, it isn’t pH neutral, although having said that, I didn’t notice any degradation to the protective coatings on my car.

What I really like about it is that despite it being on the alkaline end of the pH scale, it is also non-caustic, making it safe to use repeatedly on cars without fear of there being in damage to unpainted surfaces. Whilst any good detailer will always ensure snow foam is properly removed from the car, if you’re in a hurry, there’s no worry that it will cause damage to the paint work.

In terms of cleaning power, it only required a few minutes of dwell time to really make a noticeable difference to the grime on the car. It isn’t as thick as the other two products on this list, but at the same time, it doesn’t need to be. I found it to be highly effective at removing a lot of grime that I purposefully let sit on the lower panels on the car, without having to agitate it.

One thing to consider is the dilution ratio of Auto Foam. Bilt Hamber have suggestion of using a  Panel Impact Ratio of 4%. After a lot of testing, I found that 120ml of product to 800ml of warm water produced a great clean. Although your mileage will of course vary depending on what condition the car is in.

Bilt Hamber Auto Foam (5 Litre)
  • auto-foam is the result of extensive in-house research and development. auto-foam will reduce even further the possibility of damage to paintwork by presenting you with beautifully clear FOD free paint, ready for subsequent detailing.

Last update on 2022-09-29 As an Amazon Associate I earn from qualifying purchases.