service - can i mix oil type??

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Doe1000

Active Member
Joined
Oct 15, 2012
Messages
81
Car
A170, C220 CDI
Hello

I have 2 engine oil left overs of 4 liters of oil from my previous 2 service.
One is a 5w30 and the other 5w40. Both low sap. Can i use both or do i need to buy another 5 liters of either?
 
As long as each oil is within spec for the car, I would not hesitate to mix them.

The purists will no doubt have other views.
 
Yes you can, if both are to the same MB Spec Sheet e.g. 229.51.

The overall viscocity will be somewhere in between the two.
 
My thoughts too. They are both 229.51.

Thanks
 
You can if as stated meets the Mb spec, but why not just buy the correct oil?
 
Should not hurt it.. but if your like me it will drive u crazy knowing you have two dif. Types lol
 

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