Engine oil additives make all sorts of promises about helping your vehicle's motor last longer and increasing your gas ...

Oil is a crucial part of every internal combustion engine. Diesel and gasoline engines work differently, meaning diesel oil ...

Best diesel engine oil: Shell Rotella T6 Full Synthetic Diesel: Synthetic: 1 gallon/5 gallon: $32-$274: Enlarge Image Pennzoil. What you need to know about engine oil.

The typical advice is you should change your car's oil every three months or 3,000 miles, whichever comes first, but what if ...

Motor oil is one of the most important fluids in your vehicle. The purpose of motor oil is to reduce friction and keep a vehicle's engine clean and corrosion-free. Another critical function is to ...

Every engine needs oil to function, and every type of engine requires different type of oil to work optimally. What's ...

To your engine, oil is what keeps all the various parts working together in harmony. Nothing is more important that feeding your engine with the right lubricants. Your Chevy doesn’t have to be a ...

This even has a special name: low-speed preignition (LSPI). The current API SP gasoline engine oil standard reduces the calcium levels in order to pass a low-speed preignition test.

The grade of motor oil is less often understood than the weight. In this case, "SP" can be used in cars that call for that grade or car's that call for anything alphabetically prior like SN.

If an engine isn’t burning or leaking oil, or if it uses, say, less than a quart over 6,000 miles or so, switching to high-mileage oil may not be worth the extra cost for you.

Motor Oil Basics Motor oil is an essential engine lubricant that reduces friction between components while the engine works. Correctly picked motor oil also serves other purposes: cleaning up and ...