1, add too much oil
When the oil is insufficient, bearing and shaft neck will happen to bad lubrication, wear even cause the burning bearing accident. But too much oil, the engine also have a fault, in which the crankshaft work handle, connecting rod will churn, will increase the power loss inside the engine, will make the splash onto the wall of oil increases, resulting in burning oil discharge fault. Therefore, the oil should be controlled between the oil feet, under the line as well.
2, blindly like imported accessories
Some users love special pumping sand imported parts, but for Europe parts in the country are often difficult to have a good performance, especially in some special parts "fragile", easily lead to accidents. In fact, the domestic parts produced according to the actual situation, more suitable, more reasonable price.