Engine oil is an absolutely crucial item for any car, regardless if it's diesel or gasoline. Is it normal for the oil in ...

Driving a car with a diesel engine instead of a gasoline one, particularly if you already have experience driving a gasoline engine, is all about memorizing (and occasionally breaking) habits.

High-mileage engines need more maintenance attention, but does that mean you should use thicker oil? Before adding any, ...

For instance, many diesel engines today still use a 40-weight oil (albeit multigrade or semi-synthetic) which can tell us about the changes in the viscosity requirements over the years.

New EPA 2027 emissions rules also mean new diesel engine oil specs. A new generation of heavy-duty engine oils will feature lower viscosity, improved thermal resistance, and possibly longer oil ...

Not to be confused with standard conventional and synthetic engine oil, diesel engine oil features a higher parts-per-million measurement of additives to help prevent sludge buildup. Because of ...

So, you may not be surprised to learn that a lot of common-sense car maintenance rules apply to diesel engines as well as gas. Oil changes, filter swaps, and tire rotations every few thousand ...

That means these engines usually need lower-viscosity oil—oil that is “thinner” and flows more easily to form a cushion of lubrication between two parts. At lower viscosity, synthetic oil ...