Quote:
Originally Posted by 78w72
20/50 in a toyota? what year & model is that & what weight does toyota recommend to use? never heard of 20/50 in any modern toyota, usually 5/30.
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The biggest reason car companies today all say to run WATER for oil in NOT about these incredibly tight tolerances of today's modern engines !. Its because if you run super thin oil over a entire fleet of cars they will get a tiny bit better fuel economy, thats it.
Same reason they have a freaking computer drop a cylinder, or cut of charging your alternator while at highway speeds. Its gets a tiny, minuscule better gas mileage.
Over complicate things and give less protection in the name of fuel economy.