Originally Posted By: whizbyu
Blauparts has Ravenol on sale.
I just ordered the 507 spec and some MolyLube additive. Would this MolyLube hurt the DPF and the cat?
Does your manual say add Moly, or does it say DO NOT USE OIL ADDITIVES. The idea of adding anything to a major brand 507 rated oil is very interesting as you will wreck the precise balance of the oils additives package. If you add a can of cheap Moly from a snake oil company it could cause corrosion and most UOA results for Moly use where a major brand oil was in use, got worse after the Moly was added. If you use El cheapo supermarket oil it might improve things, but the idea that you will improve a good oil with a can of snake oil is a joke.