Originally Posted by
JanMM
Why 10W40? Why not 5W20? Or 5W30? Why not straight 30 weight? Chains don't care about starting in cold weather. Etc.
Any lubricant is better than no lube for a chain.
Just don't use melted paraffin unless you understand that it's important to avoid catching it and your house on fire.
I like 10W40 but the detergents in the oil will cause nitrogen embrittlement of the link plates and lead to premature wear. Frankly, you'd be better off, and a whole lot happier, using bacon fat.
