Originally Posted By: dtru
Originally Posted By: OVERKILL
Originally Posted By: dtru
Originally Posted By: SteveSRT8
As someone who has personally dined with SRT engineers I want you guys to know one thing. They are so tightly bound contractually that they can say NOTHING that is outside of corporate policies. Nothing.
The exact same cam phasing system is in a 5.7 as in a 6.4. yet the light duty spec is 20 weight. The HD spec is 30 weight. And the SRT 6.4 uses 40 weight.
Think about it a minute. My 05 6.1 which is a dedicated engine built strictly for high performance applications has M1 0w-40 right on the filler cap by name.
Most of us will now be able to understand why we constantly state that the Hemis run well on almost any oil...
Yes they do run well on any oil, but running well and running optimal are not necessarily the same thing. They also recommended the specific SRT branded Mobile 1, that has higher moly count than what I have seen in the non branded.
Yes the 6.1 states to use the SRT Mobile 1 but that car has been out of production since 2011 and they have updated since then. Hence them stating the "old" Mobile 1.
All I am trying to do is relay the information and my personal experience. I dont know the function behind it but the SRT branded oil has a high moly count and the engineers who designed the car stated that a high moly count is beneficial. Choose to not believe it if you want, thats your choice but I am going to take the word of the people who designed the car over opinions on the internet. No disrespect intended.
Dude, there was no "SRT" Mobil 1. The branded oil began with the SOPUS products. Previously the M1 0w-40 stocked at the dealership was the same stuff you can buy at Walmart or your local parts store. I know, because I do a fair chunk of work for the local Chrysler dealer on the IT side of things and they used to bring cases of the bottled M1 0w-40 in by the skid. I have quite a bit of it on hand because of that.
Yes I realized that in 2 posts before this. I assumed that it was SRT branded since they are doing so with the Pennzoil but I was wrong. Either way they still recommend the high moly count and from what I have seen the SRT branded Pennzoil has more.
This assumes that they are using the same moly (they should be). If they aren't, and one is tri-nuclear and the other isn't, then the difference in quantity becomes negated.
Obviously SRT had no issues with the amount of moly in the Mobil product they were previously using, which also seems to have higher levels of zinc and phos
As that was their product of choice until they lost their relationship with Mobil due to the FIAT thing.