Additives represent 15 to 20 percent of a gallon of oil with the balance being high-quality base oil. Additive packages play a key role in helping to keep an engine clean and protected from varnish ...

Aftermarket additives are a popular off-the-shelf item at truck stops and parts counters, but many of the necessary additives already are formulated in the diesel engine oils directly from the ...

Automakers recommend using genuine OEM engine oil for a reason that goes far beyond branding. These oils are developed ...

As someone who's driven classic cars daily for around 15 years, as well as working on and restoring such cars throughout my education, I take vintage automotive maintenance very seriously. Many of ...

Not up on zinkdialkyldithiophosphate? No problem. Grasp these points about engine oil additives and leave chemistry to the engineers. ConocoPhillips announced a startling claim last year: It had ...

Analyzing the oil in your vehicle is like sending your blood to the lab for tests. An engine oil analysis can provide clues about the health of your engine – without any invasive surgery. By analyzing ...

We may receive a commission on purchases made from links. Regardless of whether you drive an old Camry or high-performance sports car, your vehicle will have a specific maintenance schedule. It will ...

The new heavy-duty engine oil category, PC-12, is nearing the finish line. Here’s what fleet maintenance managers should know ...

Back in the 1980's there was a Valvoline ad campaign using a series of laconic drivers at the wheel of cars fully invested in their smoking death throes who used the tag line "Motor oil is motor oil." ...