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hey all,
just wondering what everyone uses to clean the chain. i have a o1 F4i and some people told me WD40 is good but others say it will eat the o-rings. Help! what do i do?!?! i bought the bike used with 13k (ish) miles, it is worth replacing the chain to be safe? it is showing a few tiny spot of rust on the out side of some of the links....