Switch to Full Synthetic Oil

Thinner oil circulate faster, especially in cold climates and on start-up. They can also provide a slight mileage and HP increase. But it's not enough to worry about in a street or dual-purpose vehicle.

You can also use thinner oils if the engine was assembled with clearances on the tighter side.

I read somewhere that wider viscosity spreads weren't always better. But I forgot the details. 10w-30 would not be bad. Some people run 15w-40 diesel oil. But the most important thing is to get a GOOD quality synthetic. There is a variety, including within brands. Even there, some have more and some have less zinc. Do your homework. Personally I prefer Amsoil.

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