there have been similar shifts in preferred engine oil viscosity grades. An example is the transition in heavy duty diesel engine oils in the 1980s from monograde viscosity SAE 30 and SAE 40 to ...
The Ford 6.7-liter Power Stroke diesel engine is known for reliability and durability. What type of oil does it use, and how much do you need at each change?
Additives in the oil were used to neutralize that acid ... engines have trended significantly away from the popular diesel SAE 15W-40 and 10W-30 viscosity grades. Newer automotive gasoline ...
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