Engine oil is essential for cars with internal combustion engines. It lubricates the engine's internal parts, like the camshaft(s), crankshaft, and pistons, as well as helps with heat dissipation. But ...

If you're not a do-it-yourself car owner, then tackling relatively simple maintenance like an oil change can be daunting. It gets even more confusing when trying to decide which kind of motor oil you ...

My Audi requires 5W-40 oil. I use Mobil 1, full synthetic. I have some 0W-40 left over from a previous vehicle. If I mix ...