Extra cost on oil for High-Mileage engines: Does it worth it?


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Do you own or drive a car that has a high-mileage engine and you are confused if its special oil worth the extra cost or not? Check out the facts here now!

We have featured a few articles here on Naijauto that discussed more on engine/motor oils (You can refer back here: Price of engine oil in Nigeria [updated 2019]) but we still discovered that a lot more issues are yet to be touched especially the confusion that comes with spending extra on oils for high-mileage engines.

1. When should you use extra cost oil for your high-mileage engine?

It is not new anymore to find most popular oil brands advertise or recommend some special type of oils that are claimed to contain additives which should serve as anti-ageing agents and also help to reduce engine wears in high-mileage (75,000 miles) engines.

These types of oils are usually a blend of the regular petroleum-based and synthetic oils. This oil type usually costs more than all other oil types and often times people get confused if it is worth the extra cost or not?

Truly there are some oils that may be very much beneficial than the others as they usually contain certain conditioners which are claimed to be capable of rejuvenating seals that stop or prevent oil leaks which is a very common problem in engines with high-mileage capacity.  

Oil normally start to seep through gaskets and internal seals as they shrink and become brittle with age. Sometimes, this even becomes visible streaks of oil on the lower parts of the engine or oil stains seen on a driveway or garage floor.


Gaskets and internal seals easily become brittle with age and start to let the oil seep through

When the valve-guide seals become worn out, engine oil can easily leak out and into the engine’s combustion chambers. This means such an engine will literally start to burn oil. With just small leaks, you can notice visible blue smoke coming from the exhaust as a result of burning oil, and you can also notice your overall engine oil level probably dropping below the full mark too often.

Now, the seal conditioners that are usually found in many high-mileage engine oils may eliminate or reduce seepage and small leaks by helping to rejuvenate seals back to their original shape and sizes.

If a vehicle’s engine is not leaking or burning oil, or if it sort of uses may be less than a quart over 6,000miles or thereabout, making a switch to high-mileage oil may not worth the extra cost at all for anyone.

It is really a matter of whether you should pay extra for high-performance oil especially when your car already has 100,000 miles on it but it is using very little to no engine oil.

>>> Don't just focus on car oil, there are many other fluids you need to pay more attention to: Most important car fluids you need to look out for

High-mileage oil does not hurt actually and it could really prevent leakages from starting at all. Most automakers would even say it is normal for a vehicle’s engine to consume more oil just between oil changes.

Apart from high-mileage oils having seal conditioners, they also usually boast of more detergents which are designed to clean out any sludge inside a vehicle’s engine itself; together with other additives that are meant to help reduce wearing out of the moving parts in the engine. Every engine oil, though, usually carries claims that it does superb things in the inside of an engine 😊.

  My Favorite Engine Oil for High Mileage Cars and the Reasons Carefully Explained

2. Conclusion

Some auto experts/mechanics will sometimes recommend that car owners switch to a thicker and higher viscosity oil – like the 10W-30 full synthetic oil rather than the 5W-20 full synthetic – or just using some oil additives to help stop leaks directly.

Thicker (higher viscosity) oil normally makes an engine much harder to start up in cold weathers/temperature, increases oil pressure and reduces the oil circulation around a vehicle’s engine, which literally means that more pressure will be trying to push the engine oil past the gaskets and seals.

>>> If you don't fully understand what it means by oil viscosity, check this: Engine oil specifications: what's the best oil for your car?

Oluwaseun Solomon




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