Is high mileage oil bad for your engine?

High-mileage motor oil doesn’t hurt and it could prevent leaks from starting. In addition to having seal conditioners, high-mileage oils usually boast more detergents designed to clean out sludge inside the engine, plus other additives meant to reduce wear on moving parts.

Should I use high mileage oil or synthetic?

Conclusion. Both high mileage oils and synthetic blends are good for all engines; however, high mileage oils are a better option for older cars (with high mileage) due to the special additives they contain.

What happens if you use high mileage oil?

High-mileage oils have ingredients to take care of older engines, like conditioners, seal swells, antioxidants, detergents and wear or friction additives. Typically they use a viscosity modifier that is durable and won’t lose viscosity very easily. These oils need to stay thicker longer to protect engine parts.

Is it OK to use high mileage oil in a new car?

Using a high-mileage oil in a new vehicle would be ill-advised, since no manufacturer recommends this type of oil for a new vehicle. Would it harm your engine? Most likely not, but it would be better to adhere to what is specified in the owner’s manual, at least until the warranty has expired.

Why is high mileage oil bad?

Less engine sludge: Older engines tend to accumulate sludge left behind by other motor oils. High mileage oil breaks up and dissolves residual sludge. Protection from damage: High mileage vehicles tend to suffer from more general wear and tear than younger cars.

Is 5w30 good for high mileage?

Amazon Basics Full Synthetic is the best 5w30 oil for high mileage vehicles. This oil should only be used on vehicles exceeding 75,000 miles. This motor oil is formulated for longer drain intervals. It helps in preventing a build-up on drain intervals and preventing rust and corrosion.

Is high mileage oil thicker?

Newer vehicles can utilize thinner oils for faster lubrication of new engine parts. In contrast, older, high-mileage engines benefit from thicker oils to prevent friction and oil loss.

What happens if you put high mileage oil in a low mileage car?

While you could use high mileage oil in a younger car without harming it, the issues that high mileage oil addresses usually don’t appear in vehicles with fewer than 75,000 miles. High-mileage motor oil doesn’t hurt and it could prevent leaks from starting.

Which oil is best for high mileage cars?

10 Top-Rated Oils and Additives for High-Mileage Vehicles

• Sea Foam High Mileage Motor Treatment.
• Castrol Edge High Mileage Synthetic Motor Oil.
• Lucas High Mileage Oil Stabilizer.
• Valvoline High Mileage with MaxLife Technology Synthetic Blend Motor Oil.
• Pennzoil High Mileage Motor Oil.

Is 5w20 good for high mileage?

​5w30 or 5w20 for high mileage 5w-20 or 5w-30 oil can work effectively with a high mileage car. The former is more appropriate in cold weather, while the latter is advisable during a warmer temperature. The trick for high mileage cars to use an oil that is desirable and won’t be affected by extreme temperatures.

When to use high mileage car engine oil?

The bottom line is that high-mileage engine oils are designed for engines that are beyond their warranties and have 60-, 80-, 150,000 miles. Use it if you see a leak or notice rattling. This product can do a lot to protect engines. Learn more about Cenex Auto Gold ® HMO, which is designed for older, higher mileage vehicles. Photo credit: skpy

What kind of oil is good for 250, 000 miles?

This is a fully synthetic motor oil that protects against engine wear like nothing else on the market. This oil provides outstanding wear protection for your engine all the way up to 250,000 miles! That’s quite an impressive feature!

How does high mileage oil affect engine seals?

High mileage oils contain seal conditioners and additives that cause o-rings, gaskets and seals to swell. In some cases, older valve-guide seals in engines may have reduced seepage. This can result in lower oil consumption.

What happens if you put too much oil in your car?

Use the oil viscosity recommended by the vehicle manufacturer. Using a heavier weight oil in a high mileage engine may reduce oil consumption, but it’ll also cause faster wear. So you won’t have to worry about high oil consumption because you’ll literally destroy your engine faster.