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.

According to Valovline, Restore & Protect motor oil has been shown to remove piston ring deposits and restore piston ring function.

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 ...

To truly manage a fleet, we have to stop looking at machines solely from the outside. A fluid analysis program is a critical ...

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 ...

Why the next heavy-duty engine oil category matters for durability, maintenance planning and equipment decisions beyond 2027.