Originally Posted By: 69GTX
The 30 would be a concern to me if it were a thick 30 like 0W-30 Castrol Edge. But in this case the M1 AFE is on the thin side and probably acts more like a 25 grade in the end. If it were my vehicle under warranty, I wouldn't use it.
It's just as thick as Mobil1's 5w30 and 10w30. Where do you get 25 grade from?
SAE Grade 0W-30
Viscosity @ 100ºC, cSt (ASTM D445) 10.9
Viscosity, @ 40ºC, cSt (ASTM D445) 62.9
HTHS Viscosity, mPa•s @ 150ºC (ASTM D4683) 3.0
SAE Grade 5W-30
Viscosity @ 100ºC, cSt (ASTM D445) 11.0
Viscosity, @ 40ºC, cSt (ASTM D445) 61.7
HTHS Viscosity, mPa•s @ 150ºC (ASTM D4683) 3.1
SAE grade 10W-30
Viscosity @ 100ºC, cSt (ASTM D445) 10.1
Viscosity, @ 40ºC, cSt (ASTM D445) 63.2
HTHS viscosity, mPa•s @ 150ºC (ASTM D4683) 3.0
https://mobiloil.com/en/motor-oils/synthetic