Ok, without everyone getting out their flamethrowers, I was curious about how "great" the Pennzoil Ultra that Dodge is pitching for their SRT products. Personally, I like Amsoil, and have had excellent results with it in my Harley, and various engines and transmissions. But let me give you a little background on how my mind works: I'm an engineer, and I like to do things well beyond need. For instance, what started this fact-finding mission was my consideration for the 2016 Challenger SRT HC that I am anticipating. Personally, I will take it in at 500-1000 miles and have ALL the fluids changed (Engine oil, transmission oil and rear-end oil). Why? Because I don't care how precisely you machine your engine components (and I especially don't care if the maintenance schedule says I can change the trans oil at 45 or 60k), there will be break-in, and there will be cast-off. And I don't want that debris flowing through my shiny new Challenger (for what could be years, before the recommended service interval), which I intend to keep for literally the rest of my life. So I wanted to know: Should I let them put the SRT Pennzoil Ultra back in it, or should I switch to something else? What I found actually surprised me a bit.
So my quasi-anal-retentive thought process is that not only do I change the oil well before recommended intervals, I also try to ensure that I put the best oil I can reasonably find. After all, I'm not going to simply "take their word for it," I want to know that I'm using the best oil I can realistically find. What I found, verified from multiple independent sources, was the following: (if you want to look at the whole post including test methodology and full results list, it's here: Motor Oil Wear Test Results â€“ Caution, VERY long â€¢ Speed Talk
A little background:
Film strength is the oil's ability to maintain a film between two metal surfaces when pressure is applied. Obviously, film strength is very important in places like main and rod bearings, and rocker rollers, etc. Zinc, phosphates and molybendum are obviously also important (race oils tend to have lots of zinc, but if you put it in a standard vehicle, it can clod the catalytic converter very quickly, and they generally lack the detergents that prevent gunk buildup).
FYI: the film strength is the first number, quantified in psi
1. 5W30 Pennzoil Ultra, API SM = 115,612 psi
I have not been able to find this oil with the latest API SN certification. The bottle says, “No leading synthetic oil provides better wear protection”. For once, a product’s hype turns out to be true.
zinc = 806 ppm
phos = 812 ppm
moly = 66 ppm
2. 10W30 Lucas Racing Only = 106,505 psi
zinc = 2642 ppm
phos = 3489 ppm
moly = 1764 ppm
NOTE: This oil is suitable for short term racing use only, and is not suitable for street use.
3. 5W30 Mobil 1, API SN = 105,875 psi
zinc = 801 ppm
phos = 842 ppm
moly = 112 ppm
4. 0W30 Amsoil Signature Series 25,000 miles, API SN = 105,008 psi
zinc = 824 ppm
phos = 960 ppm
moly = 161 ppm
Now, I'm not trying to doubt that Dodge/SRT wouldn't want the best oils possible in their vehicles, but we all know that many of the "factory recommended oil" certifications have more to do with advertising dollars and bulk oil contracts than quality. However, it seems that Dodge/SRT truly did seek to come up with an excellent lubricant in its collaboration with Pennzoil, and succeeded. I feel better now...