Originally Posted By: TiredTrucker
Nope. Have no motivation to look. I have used CJ-4 rated oils in VM diesel engines, old Detroits, recent MAN designed engines, and both old and new Cummins engines. Never have had an oil related problem. Engines all run just fine. Samples all look good. All of these engines, the OEM had no problem with a CJ-4 rated oil. They might have differed on viscosity they recommended, but the CJ-4 spec was just fine. Again, CJ-4 is the latest spec in N. America for all the emissions stuff piled on diesels.
There is example after example of recent emission equipped diesels racking up 750,00 miles on CJ-4 rated oils and nary an issue. Chevron, specifically, has taken their 10w30 blend, 15w40 conventional, and 5w40 full synthetic easily to 70,000 mile OCI's on these newer emission equipped diesels. And many of them are more technically complex than most anything being shoe horned into a car or pickup.
To worry about the differences between CJ-4 ACEA C3, and dexos 2 is not in my game plan. I didn't worry about it with the VM engine in my Jeep, to the New Holland engine in my ag tractor, nor the several semi trucks I have run it in, both emissions equipped and non emissions equipped varieties. Some of which were engines that cost over $30,000 to replace.
Thats ok. I am doubting you saying that it would work. Trying to get big, giant GM to include CJ-4 as a substitute would be a tall order anyways. The unfortunate part is that they would deny a warranty claim for using a CJ-4 oil.