The thinner in oil is the easier it pumps through the engine, which leads to a fuel economy improvement. We can all understand that, but there's a lot more to oil viscosity than how thick it is. I ...

To meet the expected greenhouse gas/fuel efficiency standards the federal government is in the process of developing, oil companies and engine makers have been busy developing a new standard for ...

Putting vegetable oil in a car engine is a terrible idea and should never be done, or at least that's what some experts say. What do real-life tests show?

The primary purpose of engine oil is to stop metal from touching metal. When metal surfaces come in contact, they grind together causing friction. That creates heat, stress and wear. Engine oil is ...

In anticipation of a new heavy-duty engine oil category due out in 2016, which will feature a lower-viscosity sub-category for improved fuel economy in newer engines, Shell has been running a fleet ...

In the United States heavy duty trucking lubricants market, the drive for energy efficiency is influencing a transition from SAE 15w-40 diesel engine oils to those with lower viscosity grades such as ...

Automakers recommend oil changes at specific intervals, and there are lots of reasons for that. But is improving engine ...

NEW JERSEY (WPVI) -- The New Jersey Office of Weights and Measures issued a statewide ban Thursday on 19 motor oil products after lab testing showed the viscosity on labels did not match the oil ...

Semi-synthetic and synthetic blend oil sound very similar -- and they are -- but how can you tell the difference between the ...

Starting January 1, 2027, new heavy-duty diesel engines will hit the road. And when engines change, oil has to change with them. That’s the entire story. Under upcoming EPA regulations, heavy-duty ...