the auto-glym stuff
the tar remover? any good on general road film/grey murk on light frames?
Dunno, get some and try in a hidden spot. As above, it can't be too awful for paintwork or lacquer because it's recommended for prep cleaning frames, but I'd still be cautious on something cherished.
@Howard started
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the tar remover? any good on general road film/grey murk on light frames?