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 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 ...

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 ...

A mechanic cracked open a neglected engine and what he found was brutal.

Modern engine oil does more than lubricate internal parts. It absorbs heat from the pistons and cylinder walls, working in conjunction with the cooling system to maintain the engine at the required ...