What are the DISTINCT differences and advantages of am API SL oil (starting) ten API SM (is still around,) and API SN (most current?)
How much "better" is an API SN oil than an API SL one? Or, can they be "worse?"
Trying to figure this out.. I thought API SN ushered in standards that made even the cheapest oils great, unlike API SL.. Hence, my confusion, as that may be totally wrong.
Discuss!
*And no, this isnt just for my car. ALL cars, ALL oils! API Sx...
How much "better" is an API SN oil than an API SL one? Or, can they be "worse?"
Trying to figure this out.. I thought API SN ushered in standards that made even the cheapest oils great, unlike API SL.. Hence, my confusion, as that may be totally wrong.
Discuss!
*And no, this isnt just for my car. ALL cars, ALL oils! API Sx...