Question: Which Is Better 15w50 Or 20w50?

Will thicker oil stop oil burning?

A lot of oil-burning takes place because an engine’s piston rings are worn out, and thicker oil won’t fix that.

Using thicker oil is also a particularly bad solution for modern cars.

They use low-viscosity oils that splash easily all over the moving parts of the engine to make sure they’re all lubricated..

Is 20w50 thicker than 30w?

First thing, there are no such grades a 20–50W or 5–30W. They are 20W/50 and 5W/30. The W stands for Winter and is a measure of the coldest temperature at which you can safely start your car. A 20W/50 oil is much thinner at high temperature than a 5W/30 at a low temperature, so the viscosity will not hurt your engine.

Which is better 15w40 or 20w50?

so a 15w40 is as viscose as a straight 15 oil at 40c, but only thins as much as a 40 oil would at 100c. a 20w40 just tells you it’s a little more viscose at colder temperatures than a 15w40, but thins the same as a 40 would at the higher temperature.

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.

Can I mix 20w50 with 10w30?

If you mix viscosity grades such as a 10W30 low-viscosity oil and a 20W50 higher-viscosity oil, it is reasonable to expect that the resulting product will have viscosity characteristics which are thicker than the 10W30, but thinner than the 20W50.

What oil is thicker than 20w50?

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.

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.

Which oil is best for high mileage engines?

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.

Can I 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.

When should I use 20w50?

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.

Which is better 10w30 or 20w50?

But what’s really important is that you use the oil viscosity the owner’s manual recommends. … So, 10W30 oil has less viscosity (flows easier) when cold and hot than does 20W50. Once the engine is running, the oil heats up.

What is 20w50 used for?

SAE 20W50 Synthetic Motor Oil. NEO SAE 20w-50 is designed for high performance engines of all kinds, and for any engine that is pushed to the limit of performance and temperature. Excellent for trailer towing in high temperatures and for racing engines, in any engine that can use this viscosity grade.

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.

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.

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 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…•

Can I use SAE 30 instead of 20w50?

The thicker viscosity of 30 weight oil assists air-cooled engines to keep them running… … SAE30 is very suitable for older, aged engines to use. 20w50 will work in engines for what could be described as the summer weather period. If you live in colder climes then you should really consider using 30 weight.

Can we use 20w50 instead of 15w50?

Yes,it would not make much difference. Important thing is to get the last digit,ie 50 correct. First digits are an indication of normal temperature viscosity or in layman terms how easy it would be to start the engine. But like I said it would be fine to interchange 20w50 with 15w50.

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.

Can I mix 15w40 with 20w50?

Can I use 20w50 oil as a top up to my 15w40 engine oil? … It is best to use the same brand, type and weight of oil you put in at the last oil change. Unless you are at the fringes of temperature range for the 15w-40 oil, putting the 20w-50 in isn’t going to change the viscosity of the oil enough to damage anything.

What is thicker 15w40 or 20w50?

20w50 is thicker at both low and high temps than 15w40. Kruzin – Other way around on the hot vs cold. A 15W-40 is designed to measure the same as a hot 40 weight when hot, and the same as a cold 15 weight when cold. Still thicker when cold, however.