Engine oil turns black from a combination of combustion byproducts, heat oxidation, and detergent additives suspending carbon particles in the fluid. Black oil is not automatically a sign of a problem ...

Engine oil color reveals its age, contamination level, and operating condition. Fresh oil is amber or light brown. Oil darkened to black but still translucent after a few thousand miles is normal.

It is the first motor oil proven to unstick piston rings, removing up to 100% of deposits with continuous use.

CCJ's 10 44 is brought to you by Chevron Delo, heavy duty diesel engine oil. Now there's even more reasons to choose Delo. An oil sample is only as good as the method used to pull it. You're watching ...

Chevron has found that its Delo 400 LE SAE 15W-40 engine oil is ready to help meet 2010 emissions standards. From pricing intelligence and compliance tools to charging infrastructure, diagnostics, ...

Engine oil degrades over time when exposed to heat, oxygen, friction, and pollutants. This degradation diminishes the oil's ability to protect the engine and, if not corrected, can cause engine damage ...

Is there a way to have your engine oil tested to see how it is holding up or if it's right for your engine? I have the cheapest company stock put in, but sometimes I notice that certain oil is more ...

The new heavy-duty engine oil category, PC-12, is nearing the finish line. Here’s what fleet maintenance managers should know before it arrives in 2027.

The oil you put in your engine matters. After all, your engine contains many moving parts that must remain lubricated to work properly. Otherwise, your engine could develop some serious wear and tear.

While everybody knows what the oil pump's job is and why it's there, few enthusiasts consider the lowly bubbler as a possible engine tuning resource. We've come to appreciate that it takes power to ...