Once your car crosses the 75,000-mile mark, you might be recommended high-mileage oil during your next service. But it's not always clear why this option is suggested. It can seem like an extra feature, but understanding what high-mileage oil does and when it’s needed is essential for keeping your engine running smoothly.
What Exactly Is High-Mileage Oil?
High-mileage oil is specifically designed for vehicles that have surpassed 75,000 miles. These oils contain special additives that help reduce wear on aging engine components. They often combine synthetic and conventional base oils to create a thicker, more stable formula that helps maintain seal integrity and prevent leaks.
As your engine ages, its internal parts may start to degrade. High-mileage oil can help slow down this process by keeping seals from drying out and cracking, which in turn reduces oil seepage. It also contains ingredients that help keep the engine clean and protect against corrosion, ensuring smoother operation over time.
Compared to regular oil, high-mileage oil typically includes:
- Seal conditioners to preserve gaskets and seals
- Viscosity modifiers to maintain proper thickness under different temperatures
- Detergents that break down sludge and carbon deposits
- Friction modifiers to reduce wear on moving parts
- Anti-corrosion agents to protect metal surfaces
These features make high-mileage oil ideal for older engines, as they offer better performance in both hot and cold conditions, helping to extend the life of your vehicle.
Is High-Mileage Oil Necessary for Your Engine?
Back in the 1990s, most cars were expected to last around 130,000 miles. Today, with better design and maintenance, many vehicles can easily go beyond 200,000 miles. However, even well-maintained engines will eventually show signs of aging.
Common signs that your engine may benefit from high-mileage oil include:
- Oil leaks under the car
- Increased oil consumption between changes
- Unusual noises or a louder engine sound
- Reduced power or poor performance
- Excessive smoke from the exhaust
If you notice any of these symptoms, switching to high-mileage oil could help reduce further damage and improve engine efficiency. It’s not a miracle solution, but it can provide added protection for aging components.
The Key Benefits of Using High-Mileage Oil
High-mileage oil offers several advantages that can help keep your engine in better shape as it ages:
Reduces Leaks and Seepage
As seals and gaskets dry out or crack, oil can leak into areas where it shouldn’t be. This not only leads to visible drips but can also cause internal damage. High-mileage oil helps keep these components supple, reducing the risk of leaks and minimizing oil consumption.
Helps Clean Engine Components
Over time, dirt, sludge, and carbon buildup can accumulate inside your engine. High-mileage oil contains detergents and conditioners that help remove these deposits, improving overall engine performance and reducing wear on critical parts.
When High-Mileage Oil Might Not Be Needed
While high-mileage oil has its benefits, it’s not always the best choice. If your car hasn’t shown any signs of wear, such as leaks, increased oil consumption, or unusual noises, then regular oil might still be sufficient.
Also, high-mileage oil isn’t a fix for neglect. If you’ve been skipping oil changes or driving in harsh conditions, switching to high-mileage oil won’t solve underlying mechanical issues. In those cases, a full inspection and proper repairs are necessary.
Whether you need a simple oil change or more comprehensive maintenance, DaSilva’s Auto Care is here to help. Our experienced technicians provide quality service at fair prices. Call us today to schedule your appointment at our Naugatuck location and keep your vehicle running smoothly for years to come.
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