Should the T-Roc use 5w30 or 5w40 engine oil?

[LaJaxon]

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.

[JoshuaLynn]

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.

[LukeAnn]

From a fuel-saving perspective, choosing 5W30 engine oil for the T-Roc is excellent. I used to commute daily and found that 5W30's lower viscosity reduces engine friction, saving 5% to 10% on fuel costs in city driving—eco-friendly and economical. On highways, temperatures rise quickly, but since it's a new car with a compact engine, 5W30 holds up well. 5W40 offers better protection in hot weather or traffic jams, but unless you drive aggressively, sacrificing fuel efficiency isn't necessary. The 'W' in oil grades stands for winter, and 5W30 performs better in cold starts. Consider driving habits and local temperatures—don't just focus on viscosity; assess overall vehicle condition. Prioritize oil quality too, with full synthetic outperforming semi-synthetic. Stick to regular oil change intervals, as neglecting them affects viscosity and overall performance.

[DeFelicity]

As a car owner, I always pay attention to weather changes when changing engine oil. For the T-Roc in cold seasons, 5w30 is better due to its superior low-temperature fluidity, making cold starts easier and morning drives effortless. In hot summers, 5w40 performs more stably, maintaining sufficient thickness to protect the engine under high temperatures. With frequent rain and snow, the oil must act as a shield. If the engine load is not high, choosing 5w30 is hassle-free; for frequent rapid acceleration or mountain climbing, 5w40 holds up better. The manual specifies recommended viscosity—don’t overlook it. Older cars benefit from slightly thicker oil to reduce wear. Simply choose viscosity based on daily temperatures.