Quick Answer: What Happens If I Put 10w30 Instead Of 5w30?

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..

Is it bad to put thicker oil in your car?

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.

What is the difference between 10w30 and SAE 30 motor oil?

10w30 is multiple viscousity. Recommended engine oil viscosity changes with temperature because natural oils change viscosity with temperature. A SAE 30 oil will thin out at higher temperatures. A 10w30 oil has additives to counteract the change in viscosity with temperature.

What is SAE 30 oil used for?

SAE 30 oil is typically used for smaller air-cooled engines, like the ones in small tractors, lawnmowers, and chain saws. Most motor oils today are multi-grade oils that will perform well in all seasons.

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.

Is it OK to use 10w30 instead of SAE 30?

SAE 10W30 is an oil that has SAE 10W viscosity(thickness) at low temperatures, and SAE 30 viscosity at high temperatures. The W stands for ‘Winter’. Correspondingly, can I use 10w30 instead of SAE 30? Yes; you can make use of it.

Is Thicker oil better for high mileage cars?

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 if I put 5w20 instead of 5w30?

Probably not. 5w20 oil is fairly light oil and is generally designed to work with newer engines. Motor oil has become part of a manufacturers program to allow engines to get higher fuel mileage. Lighter oils take less HP to pump through an engine than heavier oils.

What oil can be used in place of SAE 30?

5w-After you look at the API specifications you need to check the viscosities, in this case you need to use 5w-30 or 10w-30 oil as a substitute for the SAE 30. You need to keep the second number the same as your straight SAE 30, this is the viscosity of the oil at operating temperature.

Is it OK to put 10w30 in a 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.

Should you put thicker oil in an older 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 happens if you put the wrong motor oil in your car?

The brand of motor oil matters little, but its viscosity grade (10W-30, for example) is important. … Using the wrong oil can lead to reduced lubrication and shorter engine life. If the manual says to use synthetic oil, do so.