Oil and fluid testing answers both short- and long-term questions about the internal condition of engines, transmissions and hydraulic systems. A one-time sample of engine or transmission oil gives a ...

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 ...

In the world of automotive engine oils, 0W-20 is one of the thinnest, though oils as thin as 0W-8 are now used. The 0W stands for 0-weight in winter, and the 20 stands for 20-weight when the oil is ...