Posted by Mark D. [162.158.79.194] on Wednesday, May 29, 2019 at 22:21:59 :
In Reply to: Re: Future of conventional engine oil posted by Matt Wilson [172.69.69.49] on Sunday, May 26, 2019 at 23:06:01 :
I've been running Rotella 15W-40 in all my older trucks, it's one of the few that still has a zinc content without getting into HP specialty oils. It's the only oil I have found that doesn't break down to piss with 5000 mile oil changes.
Will be switching to Kendall Super D-XA 15W-40 soon, very comparable to Rotella but a lot cheaper. JMO