Quote:
Originally Posted by DocD
Don't forget it's not just the viscosity, if you have a DPF the oil needs to be a low ash or the DPF will die.
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regarding the ash, from official tech specs i found that mobil 1 0w-30 & 5w-30 have 0.6 wt% , castrol edge 0w-30 & 5w-30 about 0.64-0.7 while castrol magnatec 5w-30 has 1.1 wt%
not sure what wt% is but you can see a comparison in values (from these, only magnatec seems to present a higher amount of ash)