Question: Can You Use Thicker Oil In An Older Engine?

What is the best engine oil for high mileage?

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 0w20 damage engine?

So moving one grade of oil is not going to destroy your engine or void your warranty. But you will want to use the right oil to not damage your engine. So don’t go the wrong way and use something too thin when it is hot or too thick when it is cold. Most folks would be better off just using what the manual calls for.

When should you use thicker oil?

If the oil is too thick, the engine requires more energy to turn the crankshaft, which is partly submerged in a bath of oil. A lower number is better before the W for cold-weather performance, so a 5W oil is typically what’s recommended for winter use.

What is the thickest oil I can put in my car?

20-50 oil is an extremely viscous oil. This oil is suitable for hot climates and will provide more protection in hot weather than 10-30 oil will. 20-50 oil is also a good choice for some older vehicles. Since 20-50 oil is very thick, it may help prevent engine leaks in old cars.

Is it OK to 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.

What happens if I put 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.

Can you switch from 5w30 to 10w30?

A 10w30 is the same as 5w30 when at operating temperatures. Merely switching cold viscosity isn’t likely to do much for you. Instead, try a high mileage oil and see if that helps.

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.

Should you use synthetic oil in older engines?

It’s not accurate to say that you should never use a synthetic oil in an older car. If the car has been maintained and is in excellent running condition, the synthetic oil may protect the vehicle and prolong its life.

What 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.

What oil is best for older engines?

When you’re choosing the best oil for older cars or high mileage engines, there are several criteria you can look at.Pennzoil High Mileage Conventional Motor Oil. … Castrol GTX Part-Synthetic High Mileage. … Valvoline MaxLife High Mileage Synthetic Blend. … Mobil1 High Mileage Engine Oil. … Amsoil Premium Protection Motor Oil.More items…•

What if I use 5w20 instead of 5w30?

The key difference between 5W20 and 5W30 motor oil is that the former is thicker or less viscous. … The more viscous motor oil is, the better it will be able to resist the heat and not break down. In this case, 5w30 oil will provide better overall engine protection than 5w20.

Is 20w50 thicker than 10w40?

the huge problem is the other number though. The smaller number, (the 20 part of 20w-50) describes how the oil behaves at 40 deg C and a 20w at 40 deg C is about 10 times thicker than your engine wants. A 10w-40 is better at around 6 times thicker and a 0w-40 is much better at about 4 times thicker.

Which oil is thicker 10w30 or 10w40?

The viscosity of hot oil is measured using different test parameters than when the oil is cold, so the numbers after the “W” don’t relate to the numbers in front of the “W”. The difference between 10W-30 and a 10W-40 is the high temperature viscosity. Obviously, a 10W-40 is thicker than a 10W-30 at high temperature.

Which oil is better 0w20 or 5w30?

It readily means that the 0 oil will flow well and better at a cold temperature more than 5W-30 oils even while maintaining the same viscosity. … THE 0W-20 oil is also commonly referred to as the multi-viscosity oil because it contains a certain amount of special additives to make it have different viscosities when cold.

When should I use 20w50 oil?

20W50 motor oil is suitable for warmer climates, where the higher temperature causes the oil to thin. It is also useful for vehicles subject to hot temperatures and for those used for high-stress activities such as hauling or pulling trailers.

Will it hurt to put 10w30 in a 5w20 engine?

Modern cars are designed to use lower viscosity oil ranges, so they can properly lubricate ( see attachment) Going from 5w-20 to 10w-30 should cause no harm for one oil change. But if you engine as designed for 5W-20, give it 5W-20.

Can I use 10w40 instead of 5w30?

Your vehicle does not use 5W-30 oil. The recommended oil viscosity for your vehicle, according to Kia documentation, is 10W-40. If you drive the vehicle in exceptionally cold weather, well below 32 degrees, you can use 5W-30 oil but even 10W-40 is still perfectly OK to use if outdoor temperatures are below freezing.

Is 20w50 good for high mileage?

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.

Will 5w20 hurt a 0w20 engine?

The 0 oil will flow better at cold temperatures than the 5 oil. Both oils will have the same viscosity at operating temperature. Using one or the other should cause no issues. … Read the owners manual but seriously look at the OEM oil specs and 5w20 is going to be a superior oil than a 0w20.

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.