I just put on Iron Man sprockets, and the Regina z- ring chain. Regina says to use 80w90 gear lube on the chain. i was hesitant to do this, but did anyway. as i suspected, the chain looks like crap from all the sand sticking to the gear lube. i know the chain lube subject has been worked to death, but does anybody have any opinions on using gear lube as a chain lube ? i know i'm not to impressed with it.