Consult a viscosity chart to be sure that the oil you use will flow properly under extreme conditions. ... the best oil for a Minnesota winter may be a 0W-20 and the best for a Florida summer 30W-50.

Ford has supplied an SAE viscosity grade chart for the 6.7 Power Stroke engine in the photo below: ... the best oil for your Ford 6.7 Power Stroke is Motorcraft 5W-40 synthetic diesel motor oil.

It's always recommended to use the oil viscosity recommended by your car's owner's manual. Modern car engines are tuned with a specific oil viscosity in mind, and messing with that can damage your ...

With so many options for motor oil, it can be overwhelming finding the perfect option for your vehicle. We go over the details to help you understand which engine oil is best for your car.

The second car that I ever owned was a 2002 Chevy Silverado 2500 with a 6.6L Duramax diesel engine under the hood. It wasn't my first choice, but it was a hand-me-down from my father after my 1993 ...

Instead, in this circumstance, weight refers to the oil’s viscosity, which is a fluid’s resistance to flow. ... The best oil to run is what’s recommended by your vehicle’s manufacturer.

There seems to be conflicting advice on what viscosity engine oil to use in the one-owner 2000 Toyota Corolla Hatch AE 112R we recently bought, which has done 130,000 easy kilometres and runs smoothly ...