Updated at: 12-04-2022 - By: micdot

When it comes to oil, which is best for your engine? In the first place, which of these oils did your car’s manual say was best for your engine?

Because of this, many drivers mix up their engine oils. But can you mix 5w30 and 5w40 oil together?

A car can’t work properly if its engine doesn’t have enough oil. This will also depend on the type of oil you use in your car’s engine. This will affect how well and how long it works and runs.Motor oils are usually made to improve the performance of a car’s engine and make it more efficient, but when they’re mixed together, this goal isn’t met.

Can You Mix 5w30 And 5w40 Oil?

Let’s show you how these two oils are different. This will help you understand our answer to the question. There are different types of oils with different numbers on them before and after the letter “W” (the “W” stands for “Winter”), which show how thick or how light the oil is at low and high temps.Viscosity rating: The number before the letter is the number after the letter. Weight: The number before and after the letter are different.5W30 and 5W40 both have a low viscosity rating of “5”, which means that both oils will flow evenly at low temperatures because they both have a low viscosity rating of “5” Because they both have different weights, “30” and “40,” they won’t be the same at high temperatures.

Before we see what happens when you mix both oils, let’s learn about them. But then, in general, it isn’t bad to mix two different types of oil.Because you mixed two different oils together, your engine won’t get all the benefits it was supposed to get from either one of them.If your engine has been running on 5W30, upgrading to 5W40 won’t make it any worse, and downgrading from 5W40 to 5W30 won’t hurt it either.

Can You Mix 5w30 And 5w40 Oil?

What Happens When You Mix 5w30 And 5w40 Oil?

Because the oils have different weights, they won’t mix well together. Because it’s mixed with another oil of a different weight, the 5W40 won’t be able to do as much for your car engine as it could.All the parts of the engine will be evenly lubricated by both 5W30 and 5W40 at low temperatures. This is good for saving money on gas. Only when you mix these oils together will your engine not be able to use all of the benefits of both of them.

If you mix oils, you should also know that this can shorten the time between oil changes. You may now have to change or top up your oil more often than before. Even if you’re mixing 5W30 and 5W40 from the same brand or from two different brands, everything you read in this article still holds true.But it would be better to mix oils from the same brand, because the additives won’t be too different. This means the oils will have a better chance of mixing together to get the best results from the mix.

Conclusion5w30 vs 5w40 oil Guide + Major Difference between 5w30 and 5w40 –  AutoVfix.com


What about 5W30 and 5W40? No, you can’t mix the two oils because they both have the same low temperature viscosity (5) rating and would flow evenly to the top of the engine. However, because the oils are different in weight, they won’t mix well. This won’t hurt your engine at all.You can also mix synthetic oils with semi-synthetic oils or even high-mileage oils. If you mix two different types of oil, it won’t hurt your engine, but it won’t help it run better either. As you read through your car’s manual, you’ll see what kind of oil your engine needs.

In this case, it doesn’t seem like there is a need to do things like mix or blend oils. You might even lose your car’s warranty coverage if you do this.