5W30 vs 5W40: Which Oil is Better for High Mileage Engines?
Discover whether 5W30 or 5W40 is ideal for high mileage engines and learn about their protective benefits.
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5W-40 is generally better for high mileage engines as it provides better protection at higher temperatures. It is more resistant to thinning out, which helps in maintaining lubrication and reducing engine wear over time. This can be especially beneficial for older engines that may have larger tolerances and are subjected to more strain.
FAQs & Answers
- What are the differences between 5W30 and 5W40? 5W30 has a lower viscosity at high temperatures compared to 5W40, which offers better protection for high mileage engines under strain.
- Can I use 5W40 in a car that requires 5W30? While 5W40 can provide better protection, always check your vehicle's manufacturer recommendations before switching oil types.
- What oil is recommended for high mileage cars? 5W40 is often recommended for high mileage cars due to its higher viscosity and resistance to thinning.
- How often should I change the oil in high mileage engines? It is generally recommended to change the oil every 3,000 to 5,000 miles, but refer to your vehicle’s manual for specific intervals.