Fenwicks on a car!

I have a feeling it might be slightly abrasive (or am I thinking of the cream?) - the enamel you usually find on a caravan's allow sheet body is not the same as the paint used on cars. In fact the top surface isn't always paint at all on some types of finish!

To be on the safe side, you need to get the right sort of product for your paintwork (solid/metallic/pearlescent) and use that.

Fair point about the paint, on their site it does state use a much less concentration , Autoglym have a product called autogloss rinse , but appears to be a trade only product , and Turtlewax rinse magic is now unavailable.

It's been used on mountain bikes...