ramffml
Senior Member
- Joined
- Jul 12, 2019
- Posts
- 2,917
- Reaction score
- 5,463
- Location
- ramforum
- Ram Year
- 2019
- Engine
- hemi 5.7
I guess we should put this into more context for forum members.
This forum is heavy on Ram Hemi engine owners. Yes, there are V6 engine people, and the diesel people kind of have their own threads.
So these oil threads, in this forum, tend to be Hemi-centric. Which matters - because the Hemi is not oiled robustly. And that matters a lot to what type of oil is used and for how long.
Personally, for me that means no attempted maximum OCI intervals based solely on UOA. Why? Can not predict how contaminants restrict oil flow over time to a marginally-lubricated engine....these engines all have hydraulic circuits in them that weren't present 20+ years ago, that means sensitive orifices and passages to contaminant blockage and restriction (varnish, etc.). In a dirty environment like an engine oil sump, that means short OCI's. For me, that is 5,000 miles. (Just like with a sooty GDI single injector engine).
So what? Well, if you're changing at shorter intervals, there's no point in a zero VII oil, is there? The whole point with zero VII is no chance of sheardown and resultant varnish deposits. Why? For maximum OCI engine attempts, which is the exact opposite of what we need to do for Hemi engines.
So for me, a zero VII oil is useless, if it costs extra, anyway. And I don't see paying for high performance oils for my daily drivers either, since these are now GDI and need changing regularly.
That means the only place I use Red Line or HP Lubricants is for a Hemi band aid. All my other engines get PUP.
That's a good point, if you're not aiming for max mileage in the OCI then the no-vii has less value. And even the basic/cheapest PCMO offering has the same cleaning ability (according to Dave) so we're not losing much there either.