Review on URO Parts 1110180302 Oil Filler Cap: Premium Quality Replacement for Enhanced Engine Performance by Kenneth Murphy

This gas cap warped on my 1995 Mercedes E320 with M104 engine after only 4 months. He can't stand the heat and the engine has a small burst. First, the O-ring came loose from the cover and stuck to the valve cover. Second, the entire cover is warped or bent, which allows air to flow in and out of the valve cover. These M104 engines require a proper crankcase gasket in order for the engine to idle properly. Buyer warning!