GTECHNIQ W4 Citrus Foam Pre-Wash PH Neutral - 1L/5L – The Detail Store Skip to content
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GTECHNIQ W4 Citrus Foam Pre-Wash PH Neutral - 1L/5L
GTECHNIQ W4 Citrus Foam Pre-Wash PH Neutral - 1L/5L
GTECHNIQ W4 Citrus Foam Pre-Wash PH Neutral - 1L/5L

GTECHNIQ W4 Citrus Foam Pre-Wash PH Neutral - 1L/5L

4.8
Rated 4.8 out of 5 stars
31 Reviews
Sale price $27.50 AUD

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W4 Citrus Foam is a pH neutral formula that removes hard to shift grime, without damaging sealants, coatings or waxes.

It combines an effective citrus degreaser with a strong foaming agent making it tough on road grime and bug splatter, but kind to waxes and coatings.

It can be used at a dilution of up to 1:400 through a foam lance, or up to 1:25 through a pump sprayer.

Features & Benefits:

  • Removes road grime easily
  • Non-caustic formula
  • 100% biodegradable
  • pH Neutral

Storage and use:

  • Use in conjunction with a snow foam lance
  • Keep out of direct sunlight
  • For light dirt we recommend a 1:400 dilution, and 1:200 for heavier soiling
  • Foam Canon dilution of up to 10:1
  • Allow the foam to dwell on the surface for 5 minutes and then rinse thoroughly
  • W4 can also be used with a pump sprayer at a dilution of 1:20
  • Do not allow the product to dry on the surface

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4.8
Rated 4.8 out of 5 stars
Based on 31 reviews
97%would recommend this product
ValueRated 4.8 on a scale of 1 to 5
Reviews Summary
Customers say this citrus foam pre-wash makes cleaning cars and bikes significantly easier and faster. They appreciate how it creates thick, concentrated foam that effectively lifts dirt, grime, and bugs from paintwork before contact washing. Users find it easy to use with foam cannons or pump sprayers, noting that a small amount goes a long way. Many mention the pleasant citrus scent and how the product reduces washing time by up to half. Customers report it works well for both regular maintenance and road trip cleaning. Most praise its effectiveness at loosening dirt without affecting existing wax or coatings, making the washing process more efficient and potentially less damaging to paint surfaces.
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31 reviews
  • Matthew C.
    Verified Buyer
    I recommend this product
    Age Range 55-64
    State NSW
    Type of User Average Joe - Beginner
    Rated 4 out of 5 stars
    Yesterday
    Citrus foam

    Fantastic product.

    Easy to use makes cleaning the bikes so much easier.

    Love this stuff.

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  • Matthew
    I recommend this product
    Rated 5 out of 5 stars
    1 week ago
    5 Stars

    Love this stuff. Perfect for washing the bikes

    Was this helpful?
  • Natalie G.
    Verified Buyer
    I recommend this product
    Age Range 25-34
    State VIC
    Type of User Aspiring Prosumer - Intermediate
    Rated 5 out of 5 stars
    2 weeks ago
    Cleanes

    This product makes cleaning a dirty and grimy car so much easier. It removes bugs and is perfect as a first foam before a contact wash. The product smells good and foams up great!

    Was this helpful?
  • DANIEL M.
    Verified Buyer
    I recommend this product
    Age Range 35-44
    State VIC
    Type of User Weekend Warrior - Enthusiast
    Rated 5 out of 5 stars
    2 weeks ago
    Citrus Foam used for traveling

    I bought a pump sprayer and have been using it whilst on a roadtrip. Works amazing.

    Was this helpful?
  • SATHYA P.
    Verified Buyer
    I recommend this product
    Age Range 35-44
    State VIC
    Type of User Weekend Warrior - Enthusiast
    Rated 5 out of 5 stars
    3 weeks ago
    Perfect foaming

    This with the foam pump that I got from this store works like magic.

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