according to the manufacturer's recommendations. **
إذا سمعتم صوت حاد في المحرك - علامة تآكل اجزائه - استبدله فورا - الروتين...Make sure to change the engine oil on time, according to the manufacturer's recommendations. **
The engine roughness means a defect in one of the engine parts, which leads to an increase in friction between the moving parts, thus changing the usual engine sound tone. The engine rou…