W4 Citrus Foam- pH Neutral Prewash
R 520.00
- pH neutral, safe on ceramic and paint coatings
- Citrus degreaser cuts road grime and bug splatter
- 100% biodegradable, non-caustic formula
- Dilutes up to 10:1 through a foam lance or pump sprayer
- 100% biodegradable, non-caustic citrus formula
- pH neutral - safe over ceramic and wax coatings
- Dilutes 10:1, dwell 3-5 min, then rinse clean
- Free shippingOn orders over R1000
- Fast delivery2-4 business days
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Total price R 1,330.00
Safe Prewash Chemistry
Clean the car, keep the coating
Most strong prewashes are alkaline and caustic enough to gradually strip wax and degrade ceramic coatings over repeated use. W4 Citrus Foam takes a different approach: a pH neutral citrus degreaser that cuts through road grime and bug splatter without touching the protection underneath.
Why W4 Citrus Foam
A prewash built for coated cars
No compromise between cleaning power and coating safety.
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Coating Safe
pH neutral chemistry won't strip ceramic, sealant or wax protection during your prewash stage.
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Citrus Degreaser
Active citrus formula breaks down road grime and bug splatter without needing caustic alkaline chemicals.
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100% Biodegradable
Non-caustic and fully biodegradable, so you clean the car without harsh runoff down the drain.
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Versatile Application
Dilutes up to 10:1 through a foam lance or use it neat in a pump sprayer for targeted cleaning.
How It Stacks Up
W4 Citrus Foam vs. a typical alkaline prewash
Alkaline prewashes clean effectively, but repeated use on protected paint comes with trade-offs. Here is how W4 compares on the points that matter to detailers running coated cars.
| Feature | DetailerSA | Alternative |
|---|---|---|
| Safe over ceramic coatings | Yes | No |
| Safe over wax and sealant layers | Yes | No |
| Removes road grime and bug splatter | Yes | Yes |
| 100% biodegradable formula | Yes | No |
| Compatible with foam lance | Yes | Yes |
| Non-caustic, pH neutral chemistry | Yes | No |
Eco-Conscious Formula
Powerful on grime, easy on the environment
W4 is 100% biodegradable and free from caustic chemicals, so you are not washing harsh compounds down the drain with every prewash. Pair that with a 10:1 dilution ratio and one bottle goes a long way across multiple washes.
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Questions
Frequently asked
What dilution ratio should I use through a foam lance?
Add 100ml of W4 Citrus Foam to your foam lance and top it up with 900ml of warm water. That gives you a 10:1 dilution, which is the maximum stated dilution. You can reduce the dilution for a thicker foam or lighter grime if you prefer.
Can I use W4 through a pump sprayer instead of a foam lance?
Yes. Gtechniq states it is suitable for use through both a foam lance and a pump sprayer. When using a pump sprayer you can adjust the dilution to suit the application and how concentrated you want the product.
Is W4 Citrus Foam safe to use over a ceramic coating?
Yes. The pH neutral formula is specifically designed not to damage or degrade ceramic coatings, paint sealants or waxes. It is one of the key reasons to choose W4 over caustic alkaline prewashes, which can strip protection over time.
Will it remove wax or sealant layers?
No. Because W4 is pH neutral rather than strongly alkaline or acidic, it cleans the surface without stripping existing wax, sealant or coating protection. Caustic prewashes are the ones to avoid on protected paintwork.
How long should I leave the foam to dwell on the paint?
Gtechniq recommends a dwell time of 3 to 5 minutes. Do not allow the product to dry on the surface - if conditions are hot or windy, work in sections or rinse sooner to avoid drying on the paint.
What surfaces can W4 be used on?
W4 is designed for use on vehicle paintwork as a prewash stage. The pH neutral, non-caustic formula makes it suitable for coated paint, bare paint, and general bodywork. Always avoid letting any prewash dry on glass or trim, and rinse thoroughly after dwell time.
Does W4 Citrus Foam work on heavy bug splatter?
Yes. The citrus degreaser component is specifically included to help shift road grime and bug splatter. For very heavy contamination, applying the foam generously and allowing the full 5-minute dwell will give the citrus actives time to break down the soiling before you rinse.
Is W4 Citrus Foam environmentally friendly?
Yes. Gtechniq formulates W4 as 100% biodegradable and the formula is non-caustic, making it one of the more eco-conscious prewash options available. It does not rely on harsh alkaline or acidic chemicals to clean.