since the number preceding the W refers to its low-temperature viscosity. However, you should match the oil grade exactly while your car is under warranty as any deviation could be grounds for a ...

In the past, 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 ...

New EPA 2027 emissions rules also mean new diesel engine oil specs. A new generation of heavy-duty engine oils will feature ...

Modern engine design and the need to reduce CO 2 emissions have led to the development of additional engine oil categories and a growing number of engine oil viscosity grades for diesel engines.

Engine oil is vital for protecting a car’s engine. If your car requires 5W-20, can you use 5W-30 instead? Here’s why those ...