Question: Is 10w30 Thicker Than 20w50?

Is 20w50 thicker than 10w40?

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..

Is 20w 50 thick oil?

The “20W” indicates how quickly the engine will start when cold or in cold weather. The “50” refers to the thickness of the oil when the motor has been running for a while. 20W50 motor oil is relatively viscous and thick. Most modern oils are 10W40 or even 5W40.

Is 5w30 thicker than 20w50?

20w50 is actually thicker than 5w30. This will result in less fuel efficiency, less horsepower, and more engine damage because it will have to work harder to rotate.

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.

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.

Is it bad to mix 10w40 with 20w50?

Re: 20w50 and 10w40 mix The filter holds a good amount of oil, so yes, you will be mixing two different grades of oil which can lead to it congealing and cacking up all your oil ways.

Can I mix engine oil viscosity?

THE ANSWER IS NO! Even if two different brands of oil have the same viscosity, you still should not be mixing them together. (Why anyone would even consider doing this in the first place is something we cannot comprehend.

Is 10w30 good for high mileage?

Both high mileage 5w30 and 10w30 engine oils have the same additives, the only difference is the viscosity at cold startups. Since both oils have the same operating temperature viscosity (30) and additives, they will perform exactly the same. However, 5w30 flows much better than 10w30 during cold starts.

Is it OK to mix 10w30 and 20w50?

It’s allright. Don’t worry, won’t hurt anything. You can mix various oils, be it brands or weights or multi-grades. The one slightly higher weight multi-grade will hardly change the other characteristics of the 10W-30.

What is 20w 50 oil used for?

SAE 20w-50 Oil – Conventional & High Mileage A SAE 20W-50 motor oil is typically used in older vehicles or in particularly warm climates. Castrol GTX 20W-50 has been specially formulated to help extend the life of your engine by keeping it free from sludge, even when operating in extremely high temperatures.

What is the thickest motor oil you can buy?

The thickest viscosity grade for automotive applications is a SAE 60 which has a viscosity between 21.9 and 26 cst at 100c. Pretty thick stuff. Used in older engines, large Diesel engines.

What is the best high mileage engine 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.

What weight oil is best 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.

Is 10w40 good for high mileage?

The slightly thicker oil film from the heavier base weight oil – 10W – can help protect worn engine bearings as well. As long as you’re not hearing knocking or serious mechanical noises from the engine, the heavier oil should buy you many more miles of service from your vehicle.

Is Thicker oil better for older engines?

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.

What is the best oil for old 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 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.

Should I use thicker oil in summer?

As a general rule, you’ll get the best protection in the summer when you use a slightly thicker grade of oil, such as a 10W30 instead of a 5W30. Engines need a thicker oil in the summer months because of the summer heat and its effects on thinning the oil out.