What kind of engine oil should be used for the 2020 National VI Tharu?
3 Answers
2020 National VI Tharu uses 95-grade engine oil. Functions of engine oil: Lubrication: Reduces wear on engine metal components; Cleaning: Removes impurities to maintain internal engine cleanliness, including moisture, combustion byproducts, oxidation products, dust, etc.; Cooling: Dissipates excess heat to maintain normal engine temperature; Sealing: Forms an oil film to prevent gas leakage; Corrosion prevention: Prevents rust and neutralizes acidic substances. Composition of engine oil: Base oil: Mineral oil, synthetic oil. Additives: Viscosity index improvers, detergents and dispersants, anti-wear agents, antioxidants, pour point depressants, friction modifiers, rust inhibitors, anti-foaming agents, and other additives.
I've been driving this 2020 Tharu for over three years and am quite particular about engine oil. For China VI emission standard vehicles, low-ash oil is a must to prevent particulate filter clogging – repairs can be especially troublesome. The Tharu's 1.4T engine requires VW50800-certified 0W-20 oil as per factory specifications, with full synthetic being recommended. Premium brands like original VW Black Diamond, Shell Helix Ultra, or Mobil ESP are good choices. During summer when running AC under heavy load, oil temperatures rise and 5W-30 can serve as emergency use, but 0W-20 remains better for long-term engine protection. Don't exceed 10,000 km between oil changes – last service the mechanic mentioned this engine is very sensitive to oil viscosity, and mixing different grades may trigger warning lights. The required oil specification is marked on the oil filler cap; popping the hood to check is the safest approach.
As a long-time owner of the Tharu, I've learned my lesson when it comes to oil changes. The 20-model-year China-6 engine requires oil with VW50800 certification, otherwise the particulate filter will clog within six months. The dealership used 0W-20 full synthetic oil, but I later discovered that Shell Helix Ultra 0W-20 from JD.com's self-operated store also works and is one-third cheaper. The key is to check for the Volkswagen certification mark on the bottle. Never use 5W-40 meant for China-5 vehicles—it's too thick and can damage the engine. 0W-20 flows better during cold starts, making the engine start half a second faster in winter. Last month during maintenance, I noticed the drain plug gasket was worn and leaking, so I'd like to remind everyone to have the mechanic check the seals during every oil change.
