Question: What Is The Best High Mileage Oil?

Is Valvoline High Mileage Oil good?

5.0 out of 5 stars A+++++++++ Best High Mileage oil I have tried.

I am a career mechanic that has tried about every oil out there.

If your engine leaks a little this just might stop it completely.

Seems to be a better stop leak than any other brand of “high mileage” oil..

Which oil is thicker 5w30 or 10w40?

A 10w-40 motor oil is a thicker oil at startup than a 5w-30 motor oil. Therefore, 10w-40 oil clings to the engine’s moving parts more than the lower viscosity 5w-30 oil.

Does high mileage oil make a difference?

High-mileage oils have ingredients to take care of older engines, like conditioners, seal swells, antioxidants, detergents and wear or friction additives. … The higher-mileage oils are formulated with seal conditioners that increase flexibility and restore shape, which can help prevent leaks in the long run.

Which oil is best for high mileage engines?

Best Motor Oil For High Mileage EnginesValvoline (VV150-6PK) MaxLife 10W-40 Higher Mileage Motor Oil. … Pennzoil High Mileage Vehicle Oil. … Mobil 1 45000 5W-30 High Mileage Motor Oil. … Castrol 06470 GTX 20W-50 High Mileage Motor Oil.

Is synthetic oil better for high mileage cars?

Myth: Full synthetic oil is not good for high mileage cars or older vehicles. The myth is rooted in the idea that synthetic oil is “slipperier”—lower in viscosity, or not as compatible with seals and will therefore leak or leak more in places conventional oil might not. Again, completely untrue.

Can you go back to regular oil after using high mileage oil?

You can always go back to regular oil after using the High Mileage products.

Why is high mileage oil bad?

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.

Do you really need high mileage oil?

Who needs high mileage oil? Cars with more than 75,000 on their odometer can usually benefit from high mileage oil. Older vehicles with fewer miles can benefit too, as engine seals can erode over time regardless of mileage. Degraded seals mean leaking oil, and leaking oil means your engine isn’t working at its best.

Is 10w30 better for high mileage?

The slightly thicker oil film from the heavier base weight oil – 10W – can help protect worn engine bearings as well. As long as you’re not hearing knocking or serious mechanical noises from the engine, the heavier oil should buy you many more miles of service from your vehicle.

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.

How often should you change high mileage oil?

Depending on vehicle age, type of oil and driving conditions, oil change intervals will vary. It used to be normal to change the oil every 3,000 miles, but with modern lubricants most engines today have recommended oil change intervals of 5,000 to 7,500 miles.

Is 5w30 good for high mileage?

Furthermore, high-mileage 5W-30 motor oil is specially formulated for late model vehicles or newer vehicles with over 75,000 miles/120,000 kilometers. High mileage motor oil, with its unique additives and formulation, helps to reduce oil burn-off, and helps prevent oil leaks that may occur in older engines.

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 high mileage oil bad?

High-mileage motor oil doesn’t hurt and it could prevent leaks from starting. Most vehicle manufacturers would say it’s normal for an engine to consume some oil between oil changes.

Is Pennzoil High Mileage Oil good?

Yes. At Firestone Complete Auto Care, we believe a good oil goes beyond lubricating your engine. That’s why we trust Pennzoil motor oils for all of our synthetic oil changes. After 40 years and 3,500 patents, Pennzoil Platinum became the first motor oil made entirely from natural gas.

Can I mix synthetic and regular oil?

Yes. There is no danger mixing synthetic and conventional motor oil. However, conventional oil will detract from the superior performance of synthetic oil and reduce its benefits.

Is synthetic oil bad for old engines?

Risks of Using Synthetic Oil in Older Cars This is because many synthetic oils contain esters, which are organic compounds mixed with alcohol. This particular combination can be extremely rough on seals within the engine, which can cause the seals to wear down and begin to leak or burn oil.

Is it OK to switch to synthetic oil in older cars?

Automotive experts now recommend that you can seamlessly switch from conventional to synthetic without worrying about oil seal wear. … In older cars made before 1990, they actually want some formation and buildup of engine sludge. Their oil seals and gaskets may not be as tight as in newer cars.

What happens if I put 10w40 instead of 5w30?

What happens to an engine if I use 10W-40 instead of 5W-30 (manufacturer recommended)? … 10W30 means the oil will be a little thicker at the same lower temperatures, and will then protect the engine the same as 5W30 at higher (operating warm) temperatures. ‘W’ means, useful for winter usage.