Hello Paul, my Mercedes C200 has been parked for four years and I have been advised to flush the engine. Apparently the oil has become thick and lumpy. Can I flush it at a petrol station? George Hello ...

Many years ago I foolishly drove a car at least 25,000 miles without changing the oil. I guess I figured I’d wait until the red light on the dashboard lit up, and then I’d know I needed fresh oil.

THIS paper describes the background, operation, and results of a series of 50,000-mile low-duty service tests on motor oils. Comparisons of engine cleanliness and wear are presented in oils ranging ...

Rislone offers an Engine Treatment Concentrate that is designed to keep aging engines clean. The product can help solve sticky valves and rings, noisy valves and lifters, plugged oil passages and ...