Learn more about W4 Citrus Foam v2 on our blog!
High-foaming, coating-safe snow foam with plant-based surfactants.
Gtechniq W4 Citrus Foam V2 is a high-performance pH-neutral snow foam and pre-wash designed to remove road grime, dirt and everyday contamination before the contact wash.
The updated V2 formula uses renewable, plant-based surfactants instead of traditional petrochemical alternatives, while delivering the high foam, cleaning power and surface safety expected from Gtechniq.
It is suitable for use on paintwork, ceramic coatings and other exterior vehicle surfaces, making it an excellent choice for regular maintenance washing as well as more thorough pre-wash stages.
Why use Gtechniq W4 Citrus Foam V2?
The purpose of a good snow foam isn't simply to cover your car in foam. It's to help loosen and remove contamination before you make physical contact with the paintwork.
W4 Citrus Foam V2 creates a rich layer of foam that clings to the vehicle, giving its cleaning agents time to work on road grime and dirt. Rinsing the foam away before your contact wash helps reduce the amount of loose contamination left on the surface.
Key benefits:
- High-foaming formula for excellent surface coverage
- Plant-based surfactants from renewable sources
- pH-neutral and coating safe
- Helps remove road grime and everyday dirt
- Suitable for ceramic-coated vehicles
- Designed for use as a pre-wash / snow foam
- Suitable for use with a snow foam lance
- Available in 1L and 5L sizes
How to use W4 Citrus Foam V2
For best results, use W4 Citrus Foam V2 through a snow foam lance on a cool vehicle and out of direct sunlight.
- Shake the bottle well before use.
- Add 100ml of W4 Citrus Foam V2 to your 1L foam lance bottle.
- Add 900ml of warm water.
- Apply the foam evenly to the vehicle, working from the bottom upwards.
- Allow the foam to dwell for 1–3 minutes.
- Rinse thoroughly with clean water or a pressure washer.
- Do not allow the product to dry on the vehicle.
After rinsing, continue with your normal contact wash using a suitable car shampoo and wash mitt.
Is W4 Citrus Foam V2 safe for ceramic coatings?
Yes. W4 Citrus Foam V2 is formulated to be coating safe, making it suitable for maintaining vehicles protected with Gtechniq and other ceramic coatings.
Its pH-neutral formulation provides cleaning power without relying on an aggressive caustic pre-wash.
W4 Citrus Foam V2 at a glance
Product type: Snow foam / pre-wash
pH: Neutral
Best used for: Pre-washing exterior vehicles
Suitable for: Paintwork, ceramic coatings and exterior surfaces
Dilution: 100ml product + 900ml warm water
Dwell time: 1–3 minutes
Application: Snow foam lance
Available sizes: 1L, 5L
Gtechniq W4 Citrus Foam V2 is an excellent choice if you're looking for a high-foaming, pH-neutral snow foam that combines effective pre-wash cleaning with coating-safe performance.