Description
Product Description
Why Use Gtechniq W4 Citrus Foam?
For best results, apply W4 Citrus Foam using a 10 parts water to 1 part solution dilution ratio, let it sit, then rinse off with a garden hose or gentle pressure washer. For tougher grime in wheel wells or hard-to-reach areas, use a wash mitt or microfiber towel for added agitation.

Application Information
Simple Steps To Help You Get The Best Results
- For best results use in a snow foam lance, out of direct sunlight
- Shake bottle well before use
- Decant one inch (2.5cm) of W4 into a foam lance and fill with warm water
- Spray onto the surface of the vehicle from bottom to top
- Leave the foam to dwell on the surface for three to five minutes, and then rinse thoroughly with clean water
- Do not allow the product to dry on the surface of the car
- Store in a cool, dry place
- Use within 12 months of opening
Gtechniq Difference
Say goodbye to bird droppings and road grime—W4 Citrus Foam delivers a clean car without compromising your coating or finish.

Frequently Asked Questions
Can I use W4 Citrus Foam with a foam cannon?
Yes! W4 Citrus Foam works great with a foam cannon, foam gun, or pump sprayer, producing thicker foam for maximum coverage and a touchless car wash experience.
Is W4 Citrus Foam safe for ceramic coatings?
Absolutely! W4 Citrus Foam is pH-neutral and specially formulated to clean without stripping or damaging ceramic coatings, matte finishes, or clear coats.
Can I use W4 Citrus Foam for a bucket wash?
Yes, while it’s optimized for foam cannons and foam guns, you can also use W4 Citrus Foam in a bucket wash for targeted cleaning. Simply mix with soapy water and apply with a wash mitt.
Does W4 Citrus Foam remove water spots?
W4 Citrus Foam effectively breaks down road grime and traffic film, but for stubborn water spots, we recommend following up with a quick detailer or water spot remover.
How much W4 Citrus Foam should I use per wash?
A 10:1 soap ratio is recommended when using a foam cannon or foam gun for best results. This ensures efficient cleaning without excessive product use.