
The Volkswagen Tharu uses 5w40 engine oil. The functions of engine oil are: lubrication, auxiliary cooling, cleaning, sealing and leak prevention, rust and corrosion prevention, shock absorption and cushioning, and anti-wear. Taking the 2021 Volkswagen Tharu as an example, it belongs to the compact SUV category, with body dimensions of: length 4453mm, width 1841mm, height 1632mm, wheelbase 2680mm, and fuel tank capacity 51l. The 2021 Volkswagen Tharu is equipped with a 1.4t turbocharged engine, with a maximum horsepower of 150ps, maximum power of 110kw, maximum torque of 250nm, and is paired with a 7-speed dual-clutch transmission.

My family's Tharu has been using full synthetic engine oil all along. The 4S dealership recommends 0W-20 or 5W-30 oils that meet VW502 certification standards, such as Shell Helix Ultra which is quite reliable. From the first maintenance of the new car to now over three years later, we've consistently used low-ash engine oil, resulting in less carbon buildup and cleaner exhaust emissions. The key is to check the VW standard certification number marked in the manual - using the wrong oil can make the engine sound muffled. I remember the technician during the last service mentioned that vehicles with particulate filters must use low-ash engine oil, otherwise clogging may occur. Replacing a particulate filter costs several thousand yuan, which would be quite a financial hit.

When driving the Tharu on mountain roads, it's essential to use wear-resistant engine oil! I use Mobil 1 Gold 0W-40, which offers excellent high-temperature protection. Even when pushing the engine to 5000 RPM during aggressive driving, it doesn't falter. The turbocharged EA211 engine must use full synthetic oil, as mineral oil tends to form sludge. Once, I tried using uncertified oil to save money, and after just 3,000 kilometers, the dipstick was as black as ink—I had to change it immediately. Remember, the bottle must have the VW502/504 certification, and the viscosity shouldn't exceed 40.

When choosing engine oil for the T-Roc maintenance, remember three points: select VW502 certified oil, use full synthetic for turbocharged engines, and choose 0W grades in northern regions. I've used Castrol Edge 5W-30, which starts the engine instantly even at -25°C. Last time I saw a neighbor using regular mineral oil - the engine struggled to start on winter mornings, which was painful to hear. The OEM oil in the dealership's basic maintenance package is actually rebranded Shell oil, offering good value for money.


