Posted this on another thread and wanted to discuss more:
As a side note I find it interesting that for the C7 Corvettes with LT1 & LT4 GASOLINE engines, the factory fill and and recommended oil was Dexos2 M1 0w-40 ESP (Emissions Systems Protection), a .8% sulfated ash engine oil. Not sure if it was classified as a C3, but it certainly was a low/mid SAPS emissions protection formula for use in a very high performance gas engine.
The product data sheet just lists GM Dexos2 (license number D20679HJ015) as the only builder approval. Does not mention any ACEA or API specs. Not sure why GM would label this as a Dexos2 oil?
Sulphated ash .8%
TBN 8.5
HTHS 3.53
Phosphorus .09
Nothing extraordinary with those numbers.
And this oil, geared for emissions system protection is the oil is recommended for both street and track use. So if there are plenty of API 40 weight multi grades, why does GM recommend a low/mid saps oil geared for emissions system protection is a very high performance gas engine? Is there something about the M1 ESP line that makes it an exceptional oil?
Mobil 1™ ESP Formula 0W-40
As a side note I find it interesting that for the C7 Corvettes with LT1 & LT4 GASOLINE engines, the factory fill and and recommended oil was Dexos2 M1 0w-40 ESP (Emissions Systems Protection), a .8% sulfated ash engine oil. Not sure if it was classified as a C3, but it certainly was a low/mid SAPS emissions protection formula for use in a very high performance gas engine.
The product data sheet just lists GM Dexos2 (license number D20679HJ015) as the only builder approval. Does not mention any ACEA or API specs. Not sure why GM would label this as a Dexos2 oil?
Sulphated ash .8%
TBN 8.5
HTHS 3.53
Phosphorus .09
Nothing extraordinary with those numbers.
And this oil, geared for emissions system protection is the oil is recommended for both street and track use. So if there are plenty of API 40 weight multi grades, why does GM recommend a low/mid saps oil geared for emissions system protection is a very high performance gas engine? Is there something about the M1 ESP line that makes it an exceptional oil?
Mobil 1™ ESP Formula 0W-40