Can I Mix 5w30 With 10w30?

What happens if I use the wrong oil in my car?

You might notice a few oil spot in your garage or under your car because using the wrong oil can lead to leaks, or you might become aware of a burning smell while driving.

If the oil isn’t working as it should engine parts might not be lubricated well enough and cause friction, which can burn the oil..

What happens if you put thicker oil in your car?

If you use too thick of a motor oil for the conditions, your fuel mileage will likely suffer. This is because the thicker oil increases resistance on moving parts such as pistons. While your engine will be protected, it will be at the expense of more frequent trips to the gas station.

Do high mileage cars need thicker oil?

High-mileage motor oil doesn’t hurt and it could prevent leaks from starting. … Some mechanics recommend switching to a thicker (higher viscosity) oil — such as 10W-30 full synthetic oil instead of 5W-20 full synthetic — or using oil additives to stop leaks.

Is 10w30 better 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.

For Example: 10W30 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. When you start a cold engine up again, motor oil needs to travel to the top of the engine, where it trickles back down.

Can you mix synthetic and regular oil?

The short answer is… yes. If you don’t have a choice, adding synthetic oil to regular oil can help you out in a pinch.

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.

Is it OK to mix different weights of motor oil?

The good news is that mixing different types of oil it will not harm your engine in any way in the short run. Most synthetic and semi-synthetic engine oils are based on regular oil and are compatible. … Now, as far as different grades are concerned, mixing between them isn’t something that will damage your engine either.

What happens if you put 5w30 instead of 10w30?

Your oil is a little thicker when cold. No damage will happen. … The 5W and 10W defines how the oil will flow at 0 degrees. At operating temperature, there will be a completely insignificant difference between the two.

Will 10w 30 oil hurt a 5w30 engine?

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.

What happens if you mix 5w20 with 5w30?

Can you mix 5w30 with 5w20? No harm; if that’s all you can get, go for it. From the factory, Lexus calls for 5W30 for all years of IS350 and 2006-2010 IS250, 0W20 for 2011-13 IS250. I would not recommend mixing weights.

Does 5w30 matter than 10w30?

The only difference between these two oils is cold flow ability: a 10w30 oil will move slower than a 5w30 oil during cold startups. At operating temperatures, both oils will have the same viscosity (30) and will flow and protect identically. … If it will only be in the engine during the summer, use 10w30.

Is 5w20 good for high mileage?

Generally, you should use the oil that is recommended in your manual. If the manufacturer recommend 5W20 — you should stick with it. … Finally, some manufacturer have “High Mileage” grade oil. These are said to have additional additive specifically formulated to help engine with over 75,000 miles.

When should I use 5w30 oil?

Using these factors, the 5W30 is your go-to oil when you want something that has a thin enough viscosity for use in cold weather, wider working temperatures and is ideal for light-duty diesel or petrol vehicles.