Should the T-Roc use 5w30 or 5w40 engine oil?
2 Answers
The T-Roc requires 5w30 engine oil. Here are the relevant details: 1. Reason: Compared to 5W40, 5W30 has the same low-temperature fluidity but differs in high-temperature performance. 5W40 offers better high-temperature protection and sealing properties, but its increased viscosity leads to greater engine running resistance and higher fuel consumption. Considering the working characteristics of the T-Roc's engine, 5W30 oil is more suitable. 2. Lubricating oil: Lubricating oil is formulated from hydrocarbons refined from natural gas and crude oil. There is no strict international definition for synthetic oil, but generally, lubricating oil containing PAO is referred to as synthetic oil. Laboratory and road tests have shown that this full synthetic oil ideally combines viscosity, lubrication, volatility, and cleanliness, maximizing engine protection while minimizing friction and fuel consumption.
I've been driving my Volkswagen T-Roc for several years and I'm very particular about changing the engine oil. Generally speaking, 5w30 is better for new cars or high-efficiency engines because it has high fluidity, saves fuel, and starts smoothly, especially in winter. The area where I live has distinct seasons, with extremely hot summers. 5w40 has higher viscosity and strong high-temperature protection, preventing engine overheating and wear. For older cars, after parts have worn out, using 5w40 is more reliable. For long-distance or high-speed driving, the oil viscosity must match the driving style, otherwise the engine will sound shaky. Every time, I refer to the owner's manual and current weather, checking during seasonal changes. Don't skimp by using synthetic oil improperly to save a little money, as a major repair would cost much more. The maintenance shop also reminds me that choosing the wrong viscosity can cause cylinder scoring, directly affecting power and fuel consumption.
