Question: How Many Miles Is Castrol GTX High Mileage Good For?

Is it safe to put synthetic oil in a high mileage engine?

Because synthetic oil does a better job of cleaning out sludge, it could remove deposits that are acting as seals.

It’s not accurate to say that you should never use synthetic oil in an older car.

In fact, Castrol EDGE High Mileage is a synthetic oil designed specifically for high-mileage cars..

How long does Castrol GTX High Mileage last?

Six MonthsSix Months or 10,000 to 15,000 miles Most synthetic oils, such as Castrol, are rated to last between 10,000 and 15,000 miles or six months. These ratings are only recommendations typically applied to “normal driving,” and do not reflect severe driving conditions that may require more-frequent oil changes.

What oil should I use in my high mileage engine?

Some mechanics recommend switching to a thicker (higher viscosity) oil — such as 10W-30 full synthetic oil instead of 5W-20 full synthetic — or using oil additives to stop leaks.

Is it bad to go 1000 miles over an oil change?

Some drivers push it an additional 1,000 or 2,000 miles, but even changing your oil that frequently may be unnecessary. Depending on your car, you might be able to drive 7,500 or even 10,000 miles between oil changes without putting your vehicle’s life expectancy at risk.

Which synthetic oil is best for high mileage?

1) Pennzoil Platinum High Mileage Full Synthetic Motor Oil.2) Castrol EDGE High Mileage Full Synthetic Motor Oil.3) Valvoline Full Synthetic High Mileage Motor Oil.4) Royal Purple HMX High Mileage Synthetic Motor Oil.5) Shell Rotella T6 Full Synthetic Diesel Engine Oil.6) Mag 1 Full Synthetic Motor Oil.More items…•

How many miles can you go on high mileage oil?

15,000 milesThis high mileage oil not only offers the benefits of Mobil 1 High Mileage oil (detailed below), it is also designed to protect critical engine parts for 15,000 miles between oil changes.

Is it OK to go 500 miles over your oil change?

According to the manual, you should change oil every 7500 miles. Since you’re only over 500 miles, it’s no big deal. Get an oil change as soon as possible though.. since it will affect your life of the engine in the long run.

Will switching to synthetic oil cause leaks?

Switching to synthetic oil causes leaks: Generally, switching to synthetic oil does not cause leaks. It is true that synthetic oil is thinner than conventional oil and therefore flows more easily. If there is a spot where oil could leak out in your engine, then synthetic oil is more likely to leak than conventional.

What oil is best for older engines?

When you’re choosing the best oil for older cars or high mileage engines, there are several criteria you can look at.Pennzoil High Mileage Conventional Motor Oil. … Castrol GTX Part-Synthetic High Mileage. … Valvoline MaxLife High Mileage Synthetic Blend. … Mobil1 High Mileage Engine Oil. … Amsoil Premium Protection Motor Oil.More items…•

What’s the difference between high mileage oil and synthetic?

In this respect, synthetic oil is far superior. Conventional oils will thicken in cold weather and thin out when very hot, while the viscosity of synthetic is much more uniform. … High Mileage Oil: Vehicles are lasting longer, and more than 2/3 of the cars on the road have more than 75,000 miles on them.

Can I mix synthetic and regular oil?

The short answer is… yes. If you don’t have a choice, adding synthetic oil to regular oil can help you out in a pinch.

Is Castrol GTX High Mileage full synthetic?

Castrol® GTX® High Mileage motor oil is the leading consumer high miles brand. … It’s a synthetic blend engine oil that helps extend the life of your engine by protecting against sludge, wear and burn-off and also liquid engineered to protect your emission system.

Should I use thicker oil in a high mileage engine?

A: Yes. This is a practical method to improve oil pressure in an older, high-mileage engine. The slightly thicker oil film from the heavier base weight oil — 10W — can help protect worn engine bearings as well.

Is synthetic oil better for high mileage cars?

High mileage oil is designed for vehicles with more than 75,000 miles. … This leads to less leakage and oil burn-off, which can be common in older cars. If your vehicle is high-mileage and high performance, it’s suggested that you go with this type of synthetic oil. Not every car requires synthetic or high mileage oil.

Can you go 10000 miles with synthetic oil?

Full synthetic oils will actually last well beyond 10,000 miles. The lifespan of synthetic oil depends, but it’s not crazy to see oils still working at 15,000 miles or longer. … Our standard recommendation is 7,500 miles for a normal vehicle based on the thousands of engine repairs we’ve seen over the years.

Is Castrol GTX High Mileage good oil?

Castrol GTX High Mileage Synthetic Motor Oil Out of all their methods, we listed the Castrol GTX High Mileage Blend Motor Oil as our second best oil in the market. This oil, according to customers, is one of the best in the world. … The GTX high mileage oil comes specifically for vehicles with speed over 75,000 miles.

Is 5w30 good for high mileage?

Both high mileage 5w30 and 10w30 engine oils have the same additives, the only difference is the viscosity at cold startups. Since both oils have the same operating temperature viscosity (30) and additives, they will perform exactly the same. However, 5w30 flows much better than 10w30 during cold starts.

Is it OK to run synthetic oil in older cars?

Myth: Full synthetic oil is not good for high mileage cars or older vehicles. … Synthetic oils will enhance the engine protection in older vehicles with higher mileage, just as they do for new engines.