Engine oil turns black from a combination of combustion byproducts, heat oxidation, and detergent additives suspending carbon ...

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 ...

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.

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 ...