How Is High Mileage Oil Different?

Is it OK to mix 5w30 with 10w30?

Yes, if topping up.

If your oil must be topped up, then you are burning oil already, so the difference won’t cause more damage than is already there.

5W30 and 10W30 are essentially the same at operating temperature.

It is only for cold weather starting that the performance will be different..

Is Thicker oil better for high mileage cars?

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. … The engine does not leak and I’ve never seen a whiff of blue smoke.

Is synthetic oil better for high mileage cars?

High mileage oil is designed for vehicles with more than 75,000 miles. … As a rule of thumb, most new cars require synthetic oil. Older cars generally run well with conventional oil, unless your vehicle has more than 75,000 miles on it, in which case high-mileage oil is recommended.

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.

How long does Valvoline high mileage oil last?

Valvoline offers three (3) different levels of protection.Type of Valvoline Motor OilGuaranteeSynPower, SynPower NextGen, or Valvoline Full Synthetic High Mileage with MaxLife ™ Technology300,000 MilesMaxLife, MaxLife NextGen or DuraBlend225,000 MilesPremium Conventional or NextGen Conventional150,000 Miles

When should you get high mileage oil?

There are two schools of thought about using high-mileage oils. The first is to switch when your vehicle reaches 75,000 miles. The second is to switch if your older vehicle is beginning to show signs of engine loosening. If you notice an oil drip, that’s a sign you should start using high-mileage engine oil.

How long does high mileage oil last?

The quick-lube chains usually recommend it be done every three months or 3,000 miles, but many mechanics would tell you that such frequent changes are overkill. Indeed, most car owner’s manuals recommend changing out the oil less frequently, usually after 5,000 or 7,500 miles.

Can you switch back and forth between synthetic and regular oil?

Myth: Once you switch to synthetic oil, you can never switch back. This is one of the most persistent myths about synthetic oil—and completely untrue. You can switch back and forth at any time. In fact, synthetic blends are simply a mixture of synthetic and conventional oils.

Is 5w30 good for high mileage?

1. Valvoline 5w30 – Editor’s Choice Best Synthetic Blend High Mileage Oil. … Having a large market share also allows Valvoline to cater to all niches, but we think that this is the best all-around motor oil for a high mileage engine that we saw. That is why the Valvoline 5w30 is our Editor’s Choice best high mileage oil.

Does high mileage oil make a difference?

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.

Is High Mileage Oil Good or Bad?

High mileage oils are safe for new engines. And non-high mileage oils are safe for older cars. The higher mileage thing is more a marketing, than a functional/tribological designation. … Clean oil is better for your car engine, keep using clean oil to lubricate your car’s engine, keep your car run better and smoother.

Can you switch from high mileage oil to regular oil?

Yes, you can switch to using a synthetic motor oil. Based on how you phrased the question, no oil leaks are present. … High mileage oil has a component or two that can help, but it’s mostly marketing. Switching to a full synthetic it will do better than with a mineral oil.

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

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. … Synthetic Blend: Like the name suggests, synthetic blend oils split the difference between conventional and synthetic, both in protection and price point.

Which oil is best for high mileage engines?

The Best High Mileage OilValvoline High Mileage Motor Oil. … Castrol GTX High Mileage Synthetic Motor Oil. … Mobil 1 High Mileage 5W-30 Motor Oil. … Pennzoil High Mileage Oil. … Castrol High Mileage Advanced Full Synthetic Motor Oil. … Royal Purple High-Mileage Synthetic Motor Oil. … AmazonBasics High Mileage Motor Oil. … Mobil 1 High Mileage 5W-20 Motor Oil.

Does high mileage oil help with leaks?

Additives in certain high mileage oils can help protect worn seals and keep leaks from forming. Older vehicles tend to burn more oil and the lower volatility of Mobil 1 High Mileage helps reduce oil loss caused by burn-off, particularly on cylinder walls due to leakage past the oil control ring.