AdmiralYoda
Thread starter
Did a little looking on the VW 508/509. Looks like that applies to 0W-20 only.specifically VW 504.00/507.00 and 508.00/509.00
MB 229.71
I think the 508/509 might actually be the toughest turbo test spec currently active. The TDI Turbocharger Deposit Test is pretty tough and this is one way in which 508/509 is actually more demanding than even 504/507.
Not sure what the Dexos turbo test is or how it compares.
VW 504/507 applies to 0W-30 and 5W-30.
Mobil1 ESP X2 0W-20 meets the VW 508/509 spec. Mobil1 ESP 0W-30 and ESP 5W-30 meets VW 504/507.