Do older engines need thicker oil?

Do older engines need thicker oil?

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.

Is 10w40 synthetic?

Semi-synthetic oils such as 10W40 have long been the standard. Their base is refined crude oil, which is then blended with additives. However the market is moving towards synthetic oils.

What is 10w 30 oil recommended for?

For Example: 10W30 This means the viscosity is at 10W when the engine is cold and 30 when the engine is hot. Low viscosities are good for cold temperatures (hence the “W” association) because the oil is thinner. Thinner motor oil flows more easily and moves quickly.

Is it bad to put 10w30 in a 5W20?

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 I mix 5W20 and 10w40?

You can mix 10W & 30W to get 20W or you can mix 5W20 & 10W40, but you do not want to mix 10w & 10W30. In other words, it’s OK to mix straight weights or multigrades but not straight weights & multigrades. Eeeep….

Is it bad to mix 10w30 with 10w40?

You will be fine with that. They will mix right in with each other and no harm will be done. Even if you were to mix syn with conventional you’ll be fine. If you were to labratory test your oil it will read out as not a true 10w-30 but no harm will be done.

Can 5w20 and 5W30 be mixed?

You can mix a 5W20 with a 5W30 oil with minimal amount of issues provided it the same manufacturer and the same API classification. The question is ‘why would you?” If it is because you oil is low and the only thing available is a different grade then it might be fine until you can get it changed.

Can I mix mineral and synthetic engine oil?

Mineral, Semi Synthetic and Synthetic oils can all be mixed together, although this is not recommended. The reason this is not recommended is that during the blending process, various and different additive packs are added to the base oil to achieve various oil specifications for different intended applications.