[FrankJ]

I would avoid soaking chains in solvent. It leaches out the lubrication in the pivots where it is difficult to get back into. One way would be to soak it in a hot light weight gear oil then wipe off the excess. Probably a little overboard. You can clean them with a rag lightly soaked in cleaner. Then lube them with a chain lubricant meant for bicycle chain. Wipe off the excess. For chains exposed to dirt & grunge, an argument can be made for little to no lubricant. Or lube often with something like WD40, wiping off the excess. You are mostly lubing the side plates.