[northwind]

Good stuff that... I apply my main coats with a compressor and paraffin gun set on fine, which hs a similiar (but less good) effect.

ACF50 does wash off with chemicals, it's extremely water resistant though. It comes off just fine with, for example, Muc Off. Personally I reckon that it's best applied thoroughly then forgotten about for months on end, yes the bike gets manky but it's protected. In my experience, a bike that gets cleaned daily through winter corrodes worse than any other, if not protected, while a protected bike left filthy comes through with flying colours. The best option is to clean regularily and reapply protection, but who has time for that if they're commuting? Especially in winter, when washing a bike's just misery...