“What are you feeling, Lance, 40 weight? Fifty weight ... When in Doubt, Check Your Owner’s Manual The best oil to run is what’s recommended by your vehicle’s manufacturer.

For example, a common oil rating is 15W-40, with 15 representing the ... On The Diesel Engine There is no catch-all engine weight that is the best option for all diesel engines, as all diesel ...

There's a relatively narrow window where oil works best; too thick or too ... Make sure you get the correct weight. The range is 0W-20 through 10W-40. Pennzoil Platinum is recommended by The ...