Engine Oil

[Matt D.]

Originally Posted by A//// Guy

Ive heard Shane say numerous times that Mobile one is too thin and ruins bearings. For normal cars that are more reserved im sure its fine, but highly modified cars have issues?

I don't know that it's too thin so much as people making north of 400whp are not using thicker oil. More power requires more protection any way you look at it.

[Kracka]

Originally Posted by A//// Guy

Ive heard Shane say numerous times that Mobile one is too thin and ruins bearings. For normal cars that are more reserved im sure its fine, but highly modified cars have issues?

I don't buy his thinking on that. Plenty of high-power track Subarus down here run Mobil 1 5W-30. Subarus do have oil over-heating issues though which is going to be magnified while sitting stationary on the dyno; that will wreck a bearing real quick under high-load no matter what brand of oil you're running.