Im a newb but here are my questions:
I know Mobil 1 is a group III but is Mobil 1 4T a true synthetic? I have an older car that specifies a 10W-40 oil, can I use 4T in it(it has no catalytic converter). Can you mix 4T with regular conventioanl 10 W-40? Does 4T protect more then the fake synthetics? Thanx
I know Mobil 1 is a group III but is Mobil 1 4T a true synthetic? I have an older car that specifies a 10W-40 oil, can I use 4T in it(it has no catalytic converter). Can you mix 4T with regular conventioanl 10 W-40? Does 4T protect more then the fake synthetics? Thanx