From what I understand, it’s just a semi-synthetic or a synthetic blend. Nothin special by no means.
Schaeffer’s oils are formulated with proprietary friction modifiers Micron Moly and Penetro to reduce wear and friction on bearings, rings, pistons, cylinders and valve-trains.
Their claim to fame is less wear on the start up, less sludge and less break down at higher temps
I run FULL sun in all my cars, no mater the miles on them.
Hmm. How?...lol. Starts up when cold easier and less noise: 2013 Ram Hemi
I guess my 18 loved that PUP 5w-20. Although, Blackstone did tell me in my last analysis that the iron content was still a little high at being almost 3 years old with 29,000 miles on it. I did tell them later in a phone conversation that I do a bit of idling because I take full advantage of my remote start and I do have a fairly short commute to and from work.
I’m using Amsoil 5w20 Signature Series in it right now and I guess it likes that. Can’t really tell any differences in how it runs.
Are you using the 20w or the 30w? 5w-20 in the RAM, 0w-40 in the 6.4
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