Does it damge the cars engine when two diffrent oils are mixed?

Question

different brands

or like synthetic versus w/e other choice there is

Answer 1

What do you mean by DIFFERENT? Different brands or different numbers? Examples of this are SHELL and Valvoline AND 5W30 and 10W40. If you used two different names, there is no problem. If you used two different numbers then your engine could start using oil. When you are talking about the numbers that are on motor oil, the first number is the thickness of the oil at a normal temperature. Say about 70 degrees f. The second number is the thickness of the oil at operating temperature, this is about 200 degrees f. So you have in effect mixed (viscosity) or thicknesses of the oil. That means that if your car takes a thick oil because it uses oil, then it will use the thin oil first. Will it out right hurt the Car? NO.

Answer 2

I don't think so but it's better if U just keep on the same kind

Answer 3

no as long as it is temporary before the next oil change. you cannot do it all the time

Answer 4

no problem...every day a million people put whatever oil they find at a store or parts store...and every oil change place uses a differnt brand and even weight...

Answer 5

Yes it will damage the Engine. So, we have to use the same oil all the time

Answer 6

The short answer is no. When you say different oils though exactly what are we speaking of? If you have mixed viscosity oil I would say that would be more of an issue than say synthetic mixed with conventional oil. You should stick with the same weight oil examples 5w20, 10w40, 5w30. And the weight of the oil is determined by your manufacturer. As long as you use the same weight oil it won't make a difference whether or not you mix synthetic with semi-synthetic or conventional oil. Even if you put the wrong viscosity in running it for one oil change interval won't do any damage just make sure that you use the right viscosity regularly.

Answer 7

ALL brands are compatible. If they weren't, they'd be labeled so. It's a part of why the military ( and private business with fleets of cars/trucks ) is allowed to mix brands.

Answer 8

keep it the same.

Answer 9

No not at all. People do it all the time.

Answer 10

Most of the time thats fine on occasion just do your self a favor and do not mix conventional oil with synthetic that will hurt your engine.

Answer 11

yes.  Stick to the oil specified!

Answer 12

No because as long as you have oil in the car it will be fine.

Answer 13

Just get the same kind of oil from last time like go by the serial code on the side to explain what kind of oil it is, i dont think it matters but if you really worry about just go to the goodyear or whatever you have where you are and ask them for an oil exchange where they take out the oil from the car and put in new one

Answer 14

Mixing two different brands of crankcase motor oil will certainly NOT cause any type of engine damage. Please don't be alarmed by inexperienced incorrect answers.

Think of your question this way: #1. All oil additive companies would be out of business if you could not mix their worthless products with your two brands of motor oil. #2. What happens if you're on a trip and stop for gas and find you're a quart low on motor oil? The correct answer is you add a quart no matter what the brand as long as the bottle meets the specifications in your glove compartment handbook.