API Motor Oil Service Classifications
Or direct from API here with Engineer speak, this is the entire OIl classidfication requirements by the API.:
http://www.api.org/certifications/engin ... rint-2.pdf
SL oils Page 59-60 under sequence VE, compare to page 60-61, ZDDP level is set between .06-.08% on SM, SL must have at least .08%.
So, All SL oils are required to have ZDDP, by federaly mandated API and SAE certification.
As you can see it has the SL rating.
A ton of guys are running it with no problems. I run 0w-40 Mobil 1 (Euro formula) Car has been running great since I got it 40k ago.
What would you recommend for the tranny that is equivalent to the Mobil 1 Darth?
I'm well aware of API ratings and certifications, though I'm not sure what you are looking for there? All oils have "ZDDP," though the newer SM certification requires them to have less than SL because the ZDDP that goes through the cats in the form of oil blow by supposedly dramatically reduces the life of a catalytic converter. So, in the infinite wisdom of the stupid people in the world to stop/prevent certain things from happening, the limits have dropped. For example, Royal Purple last I saw, still had an SL rated oil. Therefore, it had (and would still have) a higher ZDDP content than SM oils. Most, if not all, SL oils will have higher ZDDP content due to the new regulations. Racing oils will have even higher amounts on top of that.
I'm not saying Mobil1 will cause problems. It's just in the testing these past few years, it has literally scraped by enough to be called a GrpIII oil. I wouldn't have a problem using it myself if it didn't cost so much and actually performed better than oils that cost less because they don't have ExxonMobil stamped on the label. Hell, I picked almost picked up two jugs of the Clean 5000 (or High Mileage, can't remember exactly) stuff when it was on sale. However, even on sale, it was more expensive than a great performing synthetic oil. Hard to make the decision at that point? GrpII, maybe even a GrpII+ oil, vs. a GrpIII oil? No.
As for the fluid, I run ATF+4. The rally team may run it, but they are also going to be changing it fairly often, after every race I'd have to guess. You are talking about replacing a long lasting semi-syn transmission fluid though with a conventional motor oil designed for use in an engine for 5,000 miles...in a transmission. Your original posts states the Mobil1 10W30 High Mileage should be used, too, so you are not even running a synthetic oil or blend for that matter anyways. I mean, Valvoline VR1 Street Formula has a ZDDP level of 1,200ppm compared to 1,000ppm in the Mobil1. So, following the logic being employed unless I am missing something, that would be a better oil to use right there. I just personally wouldn't substitute oils like this for extended use in a car that is driven around daily. Whether I am right or wrong, that is my take on the whole thing. I mean, if motor oil works better in a transmission and has been proven so, why have transmission fluid at all? The R&D guys building the transmissions and fluids have got to have a better grasp on this stuff than we do...
Also to add, I'm not looking for a debate over Mobil1, especially since I don't care for them. Everyone that uses Mobil1 will be just fine. I just prefer the better oils that cost less.