I know that I've been using Chevron high mileage in my 96 Cherokee for a year now, and the UOA looked very good, there were no leaks before, there are still no leaks. The base oil is thicker than the regular oil, and my engine likes it.
Interesting. Any idea how much ester would be in these oils?quote:
As for as HM oils with esters, this is what I know.
Pennzoil, Quaker State, Shell, Mobil, Castrol, Chevron, Texaco, and Valvoline. Do not know about the rest.