Mobil sued Castrol for calling their oil a full synthetic. Which according to Mobil it wasnt a full synthetic like M1 since its not made from a Group IV base stock.
They lost the case, so they decided to start using the cheaper base stock just like Castrol,pennzoil etc. Why make a real synthetic that costs you more money to make then the competition who is charging the same price for their fake synthetic?
German Castrol Syntec 0w-30, Amsoil, redline are some of the few remaining TRUE synthetics( Group IV). The other Castrol syntecs, penzzoil platinum and now Mobile 1 are not TRUE synthetics. They are hydrolocked Group III oils.
Here is an example of how even yellow bottled Pennzoil Dino outperformed M1 in our engine.
M1 used to be a great oil, now its an overpriced fake synthetic. My current fill is German Castrol Syntec 0w-30 (auto-zone only). Unlike the other castrol syntecs it is a true Group IV oil, here is an oil analysis on a G35 coupe. As you can see this oil shows very little wear after 7500 miles.
Element This Last 2nd to Last Universal
Sample Sample Sample Averages
yea man, just did my iol change 2 days ago along with some lugs also. I'd have to recommend the mobil1 synthetic. my car runs so much better and it even got better gas mileage. its def mobil 1 all the way