I like 2.Ok I'm going to make a decision on which oil to switch to today. Right now my top contenders are:
1. Valvoline 0W-20 API SP & Dexos1 Gen3 compliant
2. Mobil 1 0W-20 API SP & Dexos1 Gen3 compliant.
3. Royal Purple API SP & Dexos1 Gen2 or 3 Compliant
4. AMSOIL SS (not sure about true compliance?)
5. Sinclair 0W-20 API SP and Dexos1 Gen3 Compliant.
Is AMSOIL SS seriously not certified against API or Dexos etc? Why?
Which is the safest for my 45k mi engine with otherwise no issues other than the standard tick of the in-line 4.
In the AFE flavor.