FAQ: When To Use 20w50 Oil?

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.

Can I use 20W50 instead of 5w30?

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.

Which is better 10w40 or 20W50?

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 is better 20W50 or 10W30?

So, 10W30 oil has less viscosity (flows easier) when cold and hot than does 20W50. Once the engine is running, the oil heats up. The more resistant the oil is to thinning, the higher the second number.

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.

What is the best engine oil for high mileage?

Best High Mileage Motor Oil

  • Top Pick. Castrol GTX High Mileage Motor Oil.
  • Runner Up. Mobil 1 High Mileage Motor Oil.
  • Honorable Mention. Pennzoil High Mileage Motor Oil.
  • Best High Mileage Motor Oil. Valvoline MaxLife Higher Mileage Motor Oil.
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What happens if you use 10w40 instead of 5w30?

Some oil viscosity differences are less pronounced He knows this because the second number in each oil’s viscosity rating (i.e. “30”) is the same. It describes the oil’s resistance to flow at 212ºF, or normal operating temperature. Using 10W-30 instead of 5W-30, however, could make cold starts more difficult.

What oil is more viscous 5w30 or 20W50?

This means that the 20W-50 is more viscous than the 5W-30 motor oil once the engine reaches the proper temperature for driving. The more resistant the motor oil is to thinning as it heats up, the higher its second number. Thicker oil generally lubricates engine parts better than thinner oil.

Will 20W50 increase oil pressure?

Yep. Step up to a 20w50 completely if needed. You can also substitute a quart or two in extreme cases for some Lucas oil stabilizer. That stuff is extremely thick and will help bump up the pressure.

Is 10W40 good for summer?

Either 10W30 or 10W40 for summer use is fine; however, 10W-40 motor oil will better protect your engine.

Can I mix 20W50 with 10W40?

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.

What is the best 20W50 motor oil?

10 Best 20W-50 Motor Oils – Updated April 2021

Rank Product Name Check Price
1 AmazonBasics Conventional Motor Oil, 20W-50, 5 Quart AmazonBasics View Product
2 Castrol 03095C GTX 20W-50 Motor Oil, 5 Quart, 3 Pack Castrol View Product
3 Valvoline 20W-50 VR1 Racing Motor Oil – 1qt (Count of 6) (822347-6PK) Valvoline View Product
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Can I mix 20W50 with 10W30?

No, you’ll be fine. I swear I didn’t know. 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 weight is thicker?

Oil grades relate to an oil product’s performance at operating temperature (about 212 degrees Fahrenheit in your engine). You might be familiar with terms such as “30- weight ” or “10W-30” oil. Those numbers refer to the grade. The higher the number, the thicker the oil.

Which engine oil is best?

1-16 of over 4,000 results for ” Best Engine Oil ”

  • Shell Helix Ultra 5W-40 API SN Fully Synthetic Engine Oil for Petrol, Diesel, CNG/LPG Cars (4 L)
  • Motul 3000 4T Plus 10W30 Engine Oil for Bikes (1 L)
  • Castrol MAGNATEC Stop-Start 5W-30 Full Synthetic Engine Oil for Petrol, Diesel and CNG Cars (3.5L) (3416662)

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