Unlike traditional pre-wash snow foams that come loaded with caustic chemicals, W4 Citrus Foam is a pH-neutral formula that removes hard-to-shift grime without damaging sealants, coatings, or waxes.
W4 combines an effective citrus degreaser with a strong foaming agent making it tough on road grime and bug spatter, 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.
