Which Cars Can Use 10W-40 Engine Oil?

[LeSteven]

This depends on the vehicle's operating environment and local temperatures to determine which cars are suitable for 10W-40 engine oil. Here are the relevant details: 1. Viscosity value: 10W-40 is the SAE standard viscosity rating for engine oil. This viscosity value first indicates that this oil is a multi-grade lubricant. The W stands for WINTER, and the number before W represents the pour point temperature, simply put, the freezing point temperature. 2. Freezing point temperature: The freezing point temperature for 10W oil is -25°C. Other common ratings are 0W at -35°C, 5W at -30°C, and 15W at -20°C. The number after W represents the oil's kinematic viscosity at 100°C, with higher numbers indicating higher viscosity. 40 means the kinematic viscosity standard at 100°C is between 12.5mm2/s and 16.3mm2/s, and it definitely does not mean, as some rumors suggest, that it can be used below 40°C.

[XavierRose]

My decade-old Toyota Corolla runs on 10W-40 oil, and the engine noise has significantly reduced. This high-viscosity oil is ideal for older cars or engines with wear since it seals minor gaps to prevent oil burning. I even tried it in a friend's Ford, and cold starts in winter weren't an issue. However, it's not suitable for new cars—like my buddy's brand-new Tesla, which doesn't even need engine oil. For regular maintenance, I change it every 5,000 kilometers, which feels reliable. Even on long drives in hot weather, I don’t worry about the oil thinning due to overheating. Overall, it works well for most mid-aged to older gasoline engines.

[VanDelaney]

Having repaired cars for over a decade, I've seen many customers using 10W-40 motor oil. It's particularly suitable for older European cars like BMW or Audi, as well as high-mileage Japanese SUVs. This oil has medium-high viscosity, which helps reduce engine noise and protect components, preventing common issues like oil leaks. However, I wouldn't recommend it for lightweight new cars as it may affect fuel efficiency. For frequent long-distance driving, it can withstand temperature variations well. During routine maintenance, remember to check oil levels and avoid overfilling. Overall, it's ideal for those old but sturdy vehicles.

[DeAvery]

My neighbor's Jeep runs much smoother after using 10W-40. This oil suits most gasoline vehicles, especially older models or those with wear and tear. Regular sedans or SUVs can all use it, providing quick starts in cold weather and better fuel efficiency. But don't waste it on pure electric vehicles—it's simply not meant for them. When I changed the oil myself, I noticed it handles engine high temperatures quite steadily. Simply put, choose it if you drive an older car or frequently hit the highway.