Quick Answer: Is 10w30 Better For High Mileage?

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..

Will thicker oil damage my engine?

Not only that, but the engine will waste energy pumping the thicker motor oil, reducing fuel economy. Since thicker oils don’t transfer heat as well as thinner oils, operating temperatures will increase, too, possibly leading to accelerated chemical break down and harmful sludge and deposits.

Does 10w30 hurt 5w20 engine?

The oil will eventually dissipate compared to a 10w30. Conventional oil is known to burn off fairly easy compared to a full synthetic oil under hard driving conditions. I know from experience. There should be no issues at all running a 5w30 or a 10w30 oil in a 5w20 spec’d vehicle.

Can you use 20w50 instead of 10w30?

Originally Answered: Is it okay to use 20W-40 engine oil instead of 10W-30 recommended grade? … If the recommended oil is 20W40, if the climatic conditions are very hot, it will be safe to use 20w50 or 15w40/10W40/0W40, but not 10W30. The engine operates very hot, in excess of 100 degrees centigrade.

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.

What is considered high mileage for motor oil?

It all depends on how the vehicle has been driven and maintained. Some people might consider switching to a high mileage oil at 200,000 miles, while others may want to change to a high mileage oil at 80,000 miles. For the average driver, anything over 100,000 miles could safely be considered a high mileage vehicle.

Is 20w50 good for high mileage?

Considerations. The viscosity level of engine oil 20W50 is geared toward racing engines, as opposed to high-mileage engines, that run extremely hot and need heavy load operation. … Since its viscosity is so great, it can drag down the functioning of the crankshaft, resulting in less horsepower.

What happens if I use 0w20 instead of 5w30?

0w-20 is simply a different viscosity of oil. It won’t be an advantage to your engine if your manufacturer suggests you use 5w-30 and may indeed be a detriment to your engine. 0w-20 may be a recommended oil for certain conditions for your engine and may not be recommended for your engine.

Is 10w30 good for high mileage?

Mobil Clean High Mileage 10W-30 is designed for vehicles with more than 75,000 miles. Its advanced formulation helps protect seals and prolong engine life. … These oils protect against sludge and engine rust and corrosion under high and low-temperature operating conditions.

When should I use 10w30 oil?

At operating temperatures, both oils will have the same viscosity (30) and will flow and protect identically. If the oil will be in the engine during winter and you live in a place where it gets cold during these months, use 5w30 oil. If it will only be in the engine during the summer, use 10w30.

Do high mileage oils really work?

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.

Which oil is best for high mileage engines?

Valvoline High Mileage with MaxLife Technology. … Castrol Edge High Mileage. … Mobil 1 High Mileage. … AmazonBasics High Mileage Motor Oil. … Pennzoil High Mileage Motor Oil. … Lucas Oil High Mileage Oil Stabilizer. … Royal Purple HMX High Mileage Synthetic Motor Oil.

Is it OK to use 10w30 instead of 5w30?

Most oils will mix perfectly, provided they have a similar synthetic. Therefore, there is no problem in mixing 10w30 and 5w30 since one will be topping up. Mixing the viscosity of oils will not have any effect on the engine. 5w30 and 10w30 engine oils have close viscosity, and thus there is no harm in mixing them.

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

If you use 10-w-40 instead of 5-w-30 specified by the manufacturer then the viscosity of 10-w-40 used by you will be higher and oil thicker than what is specified during winters. Similarly the oil viscosity will be higher and oil thicker than specified during summers.

When should you start using high mileage oil?

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.