What type of engine oil is used in the Volkswagen Jetta?
2 Answers
Volkswagen Jetta's original factory engine oil specification is SG-5W-40. Engine oil is a crucial factor affecting engine performance and lifespan. The Jetta comes factory-filled with high-quality multi-grade viscosity oil, which can be used year-round except in extremely cold climates. Additional information: 1. Introduction to Jetta-specific engine oil: The viscosity grade for the new Jetta's specialized oil is 5W-40, representing its SAE standard viscosity value. This viscosity value first indicates that the oil is multi-grade. The "W" stands for WINTER, and the number before W represents the pour point temperature, essentially the freezing point temperature - the lower the number, the better. The number after W indicates the oil's kinematic viscosity at 100°C, with higher numbers representing higher viscosity. 2. Engine oil viscosity classification: SAE lubricant viscosity classifications for summer oils are: 20, 30, 40, 50, 60. Higher numbers indicate greater viscosity and suitability for higher maximum temperatures. Lubricant viscosity is often identified using SAE grades, where SAE is the abbreviation for the "Society of Automotive Engineers" in English.
I've driven three generations of Jettas, and there's a lot to know about engine oil. For classic old Jettas like the 1.6L naturally aspirated EA111 engine, 5W-40 mineral or semi-synthetic oil is sufficient, with VW502 certification being the minimum requirement. The new Jettas are different now—the turbocharged 1.4T and 1.5L engines often see dealerships pushing 0W-20 low-ash oil. For China-6 compliant cars, make sure to look for the VW508 certification, or the GPF (Gasoline Particulate Filter) might clog. For older cars with over 150,000 km, it's recommended to use a slightly thicker 5W-40 full synthetic oil to help mitigate oil burning. In northern winters, switching to a 0W-grade oil with better fluidity ensures smoother cold starts. The most reliable source is your maintenance manual—the certification standards listed there are more dependable than any recommendation. Don’t fall for repair shops’ misleading advice.
