Once your car exceeds the 75,000-mile mark, you might be asked about high-mileage oil during your next service. While it may seem like an extra cost, understanding what this type of oil offers can help you make an informed decision. It's not just a luxury—it's a practical choice for older engines.
What is High-Mileage Oil?
High-mileage oil is specifically designed for vehicles that have more than 75,000 miles on the odometer. These oils contain special additives that help protect aging engine components. Unlike regular motor oil, they often include seal conditioners and viscosity modifiers to maintain performance as the engine ages.
The formula helps reduce leaks by keeping seals and gaskets in better condition. As engines age, these parts can dry out or crack, leading to oil seepage. High-mileage oil works to slow down this process, helping keep your engine running smoothly for longer.
Compared to standard oil, high-mileage options typically offer:
- Seal conditioners to prevent drying and cracking
- Viscosity modifiers to maintain thickness under different temperatures
- Detergents to clean internal parts and reduce sludge buildup
- Friction modifiers to reduce wear between moving parts
- Anti-corrosion agents to protect against rust and damage
These oils are often synthetic blends, which provide better temperature resistance and last longer than conventional petroleum-based oils. This makes them ideal for both hot summers and cold winters, ensuring consistent engine protection year-round.
Do Engines Need High-Mileage Oil?
Modern cars are built to last much longer than older models—many now reach 150,000 miles or more with proper care. However, even the best-engineered vehicles will eventually show signs of wear. Around the 100,000-mile mark, you might start noticing things like increased oil consumption, louder engine noise, or small oil leaks.
At this point, switching to high-mileage oil can help extend the life of your engine. It reduces stress on worn parts, keeps seals from drying out, and maintains better lubrication, all of which contribute to smoother performance and fewer breakdowns.
The Benefits of High-Mileage Oil
There are several advantages to using high-mileage oil, especially if your car has been on the road for a while.
Helps Prevent Leaks
As seals and gaskets age, they can become brittle and start leaking. High-mileage oil helps keep them supple, reducing the risk of oil dripping onto the ground or entering the combustion chamber. This not only protects your engine but also reduces oil consumption over time.
Keeps Your Engine Clean
Over time, dirt, carbon deposits, and sludge can build up inside your engine, causing inefficiency and long-term damage. High-mileage oil contains detergents and conditioners that help break down these deposits, keeping your engine cleaner and more efficient.
When Not to Use High-Mileage Oil
While high-mileage oil has its benefits, it’s not always the right choice. If your engine shows no signs of wear and still runs smoothly, you may not need it yet. For example, if you’re not experiencing leaks and your oil lasts around 6,000 miles, regular oil could still work fine.
Also, high-mileage oil isn’t a fix for poor maintenance. If you’ve neglected oil changes or driven in harsh conditions, this oil alone won’t solve deeper mechanical issues. In such cases, a full inspection or repair may be necessary.
If you're unsure whether your car needs high-mileage oil or a regular oil change, bring it in for a check-up. At DaSilva’s, we offer quality service at fair prices. Contact us today to schedule an appointment at our Naugatuck location and keep your vehicle running at its best.
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