Originally Posted By: Benito
Originally Posted By: edyvw
I did not miss your point, but you did mine.
If you allow 5W30 or 0W30 oils in these applications, uneducated drivers (and majority of them who drive those cars are very ignorant of mechanics of what they drive, they drive them bcs. of status and bcs they can afford them), it can happen very easily for drivers to use any 5W30 oils. And that is not limited to drivers only, many mechanics still claims that ANY synthetic oils is good for European cars.
I understand that point, but BMW, VW, Audi, Non AMG Mercedes all allow xw30. The risk that you cite is there for the vast majority of Euro vehicles. AMG & Porsche are the only ones calling for xw40.
Yeah, but that is their way of dealing with issues, just more stricter. BMW for a long time required 10W60 in their M engines due to some issues, but then some are now allowed to use BMW LL-01.
Precisely bcs they allow xxW30 in most of their engines, they can see issues. I know bunch of Euro engines, especially VW 1.8T that failed bcs drivers though ANY synthesis 5W30 is OK.