Do any oils have both BMW LL-01 and GM4718M?

[JohnGalt]

Originally Posted By: fdcg27
Interesting.
I thought that 4718 was mainly about deposit control under high heat conditions, at which I thought GC would excel.
If two different Castrol blends are offered, one being 4718 specific, then I guess I was wrong about GC likely being capable of meeting 4718.
Castrol would not otherwise bother to offer a 4718 specific blend.

Sure they would. GC 0w-30 may exceed 4718, but, they want to offer a lower cost blend to market to it.

 

[Quattro Pete]

Once again, what are all the requirements of 4718M spec?

 

[GMorg]

Since GM4718M is based on a GF-4/SM oil and thus limited in the amount of zinc/phosporous, I would think that GC could not meet the spec because it cannot meet GF-4/SM. I know that I don't know for sure, but I would be very surprised if GC did not meet GM4718M otherwise - especially since Castrol uses their "exceeds..GM4718M" language for everything in their Syntec line that meets SM except for 5W20.

GM4718M specs tighter requirements for oxidation, thickening, volatility, and piston deposits in the Sequence IIIG tests. It is essentially a test of heat stability.

For example, in the Sequence IIIG test (a General Motors 3800 Series II 3.8L V-6 engine run at 125 horsepower, 3600 RPM, and 150° C oil temperature for 100 continuous hours), a GF-4/SM oil can have up to a 150% increase in viscosity (measured at 40C), but to be GM4718M, an oil can only increase in viscosity by 90%.