Oil changes used to be a monthly ritual. Not long ago, 10,000 miles was about all you could expect from engine oil. We’re up to 50,000 miles today in many instances, and annual oil changes may be on ...

When you take your vehicle in for an oil change — or change you oil yourself if you're so inclined — you probably don't give much thought to what's in the fluid being drained. It might not occur to ...

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 ...

An oil analysis can help determine engine health, but only if you know what to look for. This video from Engineering Explained (and sponsored by Mobil 1) breaks it all down. Host Jason Fenske used his ...

Where a coolant's neutralization number is related to the quantity of acid- or base-forming materials in a solution, pH indicates their intensity - and can indicate things going wrong in the cooling ...

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 ...

An engine oil sample is a lot like a blood sample in that it can show details and warning signs of maintenance problems long before they become catastrophic, but many fleets don’t go through the ...