Generally speaking, the oil change interval is 5000- 10000 km or once every six months to one year. If the oil change cycle is too long, the performance of the oil will decline, and the final result is that the carbon deposit will increase and the engine life will be reduced.
Engine oil has a great influence on the engine, so the quality of engine oil is extremely important. In terms of engine oil, don't be greedy and cheap. Carefully picked up sesame seeds and lost watermelon. At the same time, you must go to a regular store to buy engine oil, and blindly spend a lot of money to buy fake engine oil. That's really too much blood loss.