whizznbyu
Veteran Member
- Joined
- Jul 11, 2006
- Location
- Waxhaw, NC
- TDI
- 2015 Golf Sportwagen 6 speed manual. B5 died at 302k miles.
I looked at the spec/property sheets of M1 ESPs and found an MB 229.51 and 229.31 that has roughly the same sulfur content as the VW 507, 0.6 and 0.8 respectively.
This page shows that this oil is not only approved for VW 507 but also for MB 229.51 and 229.31
https://www.mobil.com/English-GB/Passenger-Vehicle-Lube/pds/GLXXMobil-1-ESP-5W30
Is ESP's property purely a matter of sulfur, ash and phosphorus content? If so, it seems that the 5W-40's ash (0.6) is lower than the 5W-30's ash (0.8). Does that translate to marginally longer DPF regeneration intervals? Does it also mean that MAYBE to 5W-40 can be used instead of the 5W-30 specially in older engines? Does 5W-40 offer better shear protection than 5W-30?
This page shows that this oil is not only approved for VW 507 but also for MB 229.51 and 229.31
https://www.mobil.com/English-GB/Passenger-Vehicle-Lube/pds/GLXXMobil-1-ESP-5W30
Is ESP's property purely a matter of sulfur, ash and phosphorus content? If so, it seems that the 5W-40's ash (0.6) is lower than the 5W-30's ash (0.8). Does that translate to marginally longer DPF regeneration intervals? Does it also mean that MAYBE to 5W-40 can be used instead of the 5W-30 specially in older engines? Does 5W-40 offer better shear protection than 5W-30?