Quote:
Originally Posted by Signature Wheel BMW
LM is junk, lower grade than OEM. HTHS is 3.5. Castrol HTHS is 5.0. So either use OEM Castrol, x8100, or Ravenol for track / aggressive driving. Reason are lowest viscosity cold and hot, and highest HTHS. Otherwise, Redline 5w50 is a good alternative for colder climate and track use. Redline 5w50 is the thickest of its weight, while being thinner than the thinnest 10w60.
Most important specs for our motors are thinnest viscosity of its class (bearing clearance) and HTHS (bearing protection). Everything else, not as important.
I hear a lot of "I've been using x for 2yrs, it's fine." Stick with OEM or find an oil that has the lowest viscosity and highest HTHS as OEM. Otherwise, don't move away if there's not improvements.
|
You might be interested in
Mobil1 10w-60 then, if you can get it in the US.