Is High Mileage Oil A Gimmick?

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..

Does high mileage oil help with leaks?

High mileage oil also works to minimize leaks and oil seepage. 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.

How often should you change high mileage oil?

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.

How long does Valvoline high mileage oil last?

for up to 300,000 miles!

Should I use high mileage oil or synthetic?

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 high mileage oil worth it Car Talk?

In general terms, high-mileage oil probably costs a bit more than a comparable standard lubricant, but if your car has been around the block a few hundred thousand times, the benefits can be well worth the added expense. For instance, the abovementioned seal conditioners can be surprisingly effective.

Is it OK to mix high mileage oil with regular?

It won’t hurt anything to mix the oils, one can even mix synthetic with non-synthetic.

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.

Is Castrol EDGE high mileage good oil?

Castrol EDGE High Mileage is part of our strongest and most advanced range of full synthetic engine oils. … As your car ages, its engine can lose performance and efficiency. Proper vehicle maintenance is critical to keep an older engine performing at its best.

Is high mileage oil thicker or thinner?

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.

Can I switch back from high mileage oil?

IF you switch to a “high mileage” motor oil, you should not switch back to regular. This is because the “high mileage” formulations swell seals. If you switch back the seals un swell and cause leaks.

What’s the best high mileage oil?

Mobil 1Our pick for the best motor oil is Mobil 1 High Mileage 10W-30 Motor Oil. It’s one of the best synthetic oils for high-mileage vehicles, reduces leaks, and minimizes sludge buildup. For a less expensive option, consider the Valvoline High Mileage Synthetic Blend Motor Oil.

How much does high mileage oil cost?

High mileage motor oils cost at least $2 more per quart than regular oil (conventional or synthetic). Based on national averages before discounts, the price range for a high mileage oil change with conventional oil is $30-$65, and a synthetic high mileage oil change costs $55-$85.

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 synthetic oil is best for high mileage?

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