Had a slightly rusty chain and cassette. Used wd40 and a cloth to clean up most of it. Should I worry about this leftover? Was trying to avoid tearing up the bike... :
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Wd-40 Bike Specialist Rust Remover Soak Jug 1 gal – 365 Cycles
Is it okay to spray regular wd-40 to clean the dirt, mainly the spring section, on my rear derailleur? I got bike lubricant to put in after- if need to. : r/bikewrench