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 ...

Modern vehicle engines use much lighter motor oil than they did back in the 1960s and 70s, but why has this change happened ...

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 ...

Stricter federal regulations are reshaping the engine oil industry. PC-12 and low-viscosity HDEOs can help with compliance and performance. As the temperatures rise and the days become longer, your ...

If you're in the auto parts store wondering what all the codes mean on bottles, then you are not alone. Here's our handy ...

Chevron conducted a live teardown of a Detroit DD15 engine, with more than 400,000 miles of service using Delo 400 XLE 10W-30, during the Mid-America Trucking Show. Photo: Evan Lockridge To meet the ...

Fleets that switch to lower viscosity engine oils can increase fuel savings by as much as 1.5 percent, according to a new Confidence Report from the North American Council for Freight Efficiency and ...

The transition to CL-4 oils is expected to be backward-compatible, but FB-4 use may depend on OEM approvals for specific ...

NEW JERSEY (WABC) -- 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 ...