Mobil 1 15w-50 film strength

[RooflessVW]

The intent of engine oils like Dexos R 5W50 is to ensure high oil pressure to bearings and rotating parts furthest from the oil pump without causing excessive heat and power loss from redundant HTHS.

What

 

[Hohn]

What

Using oil that is thicker than necessary for protection costs power and generates viscous heat from all that pumping work.

Is that clear enough?