Engine oil seems so simple. It's slippery. It keeps metal parts from fusing together. It's messy, especially when it has been squeezed, slung, and sprayed around the inside of a hot engine for ...

In the "What's That Stuff?" on motor oil, Steve Ritter mentions zinc dialkyldithiophosphates (ZDDP) as a key antiwear agent (C&EN, March 13, page 38). It has been used in motor oils for more than 60 ...

It is widely known that diesel engine oils contain more Zinc (ZDDP) than regular passenger motor oils, but does that make a diesel engine oil (HD) a good choice for hot rods or race cars? To answer ...

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 ...

Q:For a while all I heard was how using oil with reduced zinc would destroy an engine equipped with a flat tappet cam, but the controversy seems to have died down. I'm about to put my dad's 1955 ...

Oil additives play an essential role in maintaining car engine health. They provide additional lubrication, protect against wear and tear, and help remove impurities and build-up from your engine.

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." ...