What kind of engine oil should be used for Jetta?
2 Answers
Jetta should use SG5W40 engine oil. The engine oil is an important factor affecting the engine's function and service life. The Jetta is factory-filled with high-quality multi-viscosity oil, which can be used year-round except in extremely cold climates. Here is more information about engine oil: 1. Mineral oil: Mineral oil is the residue left after gasoline and heavy oil are extracted from petroleum. It is actually a natural oil with more impurities. It is cheaper compared to semi-synthetic and full-synthetic oils but has poorer lubrication properties and a shorter service life. 2. Semi-synthetic oil: Semi-synthetic oil is between mineral oil and full-synthetic oil. It contains a large number of anti-corrosion additives to improve the stability and high oxidation resistance of the oil. 3. Full-synthetic oil: Full-synthetic oil is the highest quality and most durable among the three types of oil, and it is also the most expensive. Generally, it can be used for 10,000-12,000 kilometers in passenger cars without deterioration. 4. Hazards of water in engine oil: If a small amount of water enters the engine and mixes with the oil, the oil quality deteriorates. Oil containing water can increase wear on engine components, potentially leading to increased engine noise and vibration during future vehicle operation.
I've been driving this Jetta for almost five years, always using 5W-40 full synthetic oil like Castrol Edge or Mobil 1. Volkswagen engines have strict oil requirements, especially needing oils that meet the VW 502.00 standard to ensure viscosity stability at high temperatures and reduce wear. I change it every 8,000 kilometers, and the engine sounds smooth with fuel consumption maintained at around 7 liters per 100 km. While mineral oil is cheaper, it tends to cause carbon buildup over time, affecting power response. During regular maintenance, check the oil level and don't let it get too dark. New car owners should check the manual for the specific viscosity; for example, using 5W oil in cold winter starts can prevent engine shake and significantly extend the car's lifespan.
