Picking the wrong oil can affect your engine’s performance and even its lifespan. You’ll discover the key differences between 5W30 and 10W30 oil, how each one impacts your vehicle, and which option suits your driving
0W-20 and 5W-30 are both multigrade engine oils, but they differ mainly in viscosity at operating temperature. 0W-20 is thinner when hot, which can improve fuel efficiency and cold-start flow, making it ideal for modern
The difference between 10W-30 and 10W-40 engine oil is their thickness at operating temperature. Both flow similarly when cold (10W), but 10W-40 is thicker at high temperatures, offering better protection for older engines or high-heat
5W-20 and 5W-30 oils share the same cold-start viscosity (“5W”), but 5W-30 is thicker at operating temperature than 5W-20. This makes 5W-20 slightly better for fuel economy and cold performance, while 5W-30 offers stronger high-heat
Quick Verdict: 5W30 vs 5W40 The main difference between 5W-30 and 5W-40 engine oil is how thick they are at operating temperature, which affects protection and performance. Both flow the same when cold (the “5W”),
5W-30 and 5W-30 High Mileage oils have the same viscosity, but high mileage oil is specially formulated for engines with over 75,000 miles. It contains additives that help condition seals, reduce leaks, and minimize oil
