How often should a Jetta be serviced with Shell Helix HX7?

[DiAbel]

Jetta using Shell Helix HX7 can be replaced every six months. Replacement cycle: Change the engine oil every 5,000 to 10,000 kilometers. If the car is used infrequently and it takes several years to reach 10,000 kilometers, then replace it based on time, which can be every six months. Reason: If the oil is not changed for a long time, it will deteriorate. Engine oil has its own replacement cycle. The degradation of engine oil is actually affected by oxidation, and the speed of degradation is determined by the rate of oxidation. Regular oil changes are very necessary, as the oxidized substances in the oil will be expelled from the engine, creating a good working environment for the engine. Maintenance: During maintenance, the gasoline filter and air filter can be removed and cleaned with compressed air if they are not dirty. Additionally, replace the spark plugs every 30,000 kilometers. Pay attention to whether the gear oil has water ingress; if it does, replace it in advance. The timing belt and timing belt tensioner should be replaced every 80,000 kilometers for 2V models and every 60,000 kilometers for 5V models.