JHZR2
Staff member
Hi,
Can anyone tell me the differences between the long life specs of GM/Saab, MB (229.5), and BMW long-life? I assume that ACEA A3 is the main consideration, taking into account the stability of the viscosity and some wear factors. But there has to be one main central chemistry or parameter that sets these oils apart from regular old SL.
I believe they may have an additive package more indicative of a HDEO, yet only typically a CF or no 'C' rating.
I think ethyl corp used to have a pdf file that outlined the different specs. I consulted it when studying the difference between MB228.x and 229.x specs. But now Im more concerned with the GM spec, and it seems to me that they all must be relatively close in design, but would like some reassurance. Maybe a VOA or M1 0w-40 and saab 0w-30 vs GC would shed some light, as then all the specs are covered?
Thanks for your help,
JMH
Can anyone tell me the differences between the long life specs of GM/Saab, MB (229.5), and BMW long-life? I assume that ACEA A3 is the main consideration, taking into account the stability of the viscosity and some wear factors. But there has to be one main central chemistry or parameter that sets these oils apart from regular old SL.
I believe they may have an additive package more indicative of a HDEO, yet only typically a CF or no 'C' rating.
I think ethyl corp used to have a pdf file that outlined the different specs. I consulted it when studying the difference between MB228.x and 229.x specs. But now Im more concerned with the GM spec, and it seems to me that they all must be relatively close in design, but would like some reassurance. Maybe a VOA or M1 0w-40 and saab 0w-30 vs GC would shed some light, as then all the specs are covered?
Thanks for your help,
JMH