Shell Rotella Gas Truck 5W-30 has becoming popular lately because SUVs and pickup trucks are popular, and this oil claims to be tailored for them. However, is it for real or a marketing hype? ....
Moral of the story: Don't go with the marketing hype -- go with the certifications. .....
Disclaimer: The calculations/estimates are only based on the viscosity data. There is no way to estimate the quality of the additive pack without engine and bench tests, other than from the certifications/OEM approvals claimed.
A Thicker oil wont reduce wear if the film provided by the thinner oil is adequate.
I am going to challenge the logic a bit here as the argument demands the challenge.
The extension of this logic is that an HD SAE30 with a C service category is "best" , and
anything else is a compromise bowing to spark ignition engines, fuel economy reqs
and to multi-viscosity, cold climate demands.
If this is found disagreeable, We are back to the assertion above this first argument
RGT is an ILSAC GF-5
Oil and bound by GF-5.
This is an Apples to Oranges comparison
RGT is not a CK category oil
So marketing - maybe a bit, but We still don't know.
Is RGT a bit more viscous and does it have a bit more AW adds?'
Is that enough to that validate the marketing for most consumers?
Now the valid comparison should really be between QSUD (or PP) or M1 and RGT
So, go at it again GOHKAN and let us come to a more valid assumption.
But thanks for the work so far. It is thought provoking.