Would anyone here run a 0w40 Mobil 1 in a new car that calls for 5w20 or a 5w30, while it is in warranty yet? How about when it is out of warranty?
Would you run say a Mobil 1 0w40 if you lived in New England or the upper midwest?
How would a manufacturer know if you even used another weight oil if you needed warranty work?
Would you run say a Mobil 1 0w40 if you lived in New England or the upper midwest?
How would a manufacturer know if you even used another weight oil if you needed warranty work?