can the e70 run 5w20?
 

car has 40,000 kms and this whole time it's been running castrol 5w30. but now i have a jug of mobil 1 5w20. is it safe to run this oil? thanks.

I wouldn't use it. 20 weight is pretty thin.

I wouldn't.


But, if I were tempted to use the jug of 5w-20, I would buy a jug of Mobil 1 5w-30 or 5w-40 and mix it 50/50.

No.

Not even knowing which of the motor options you have, I'd say no.

Just to use up "a jug" of oil? Crazy...

what about castrol syntec 5w40? does it protect better than 5w30?

If you have a very high ambient temperature, yes. How hot does it get in Norge?

"protect"?

What a strange (yet common) term about oils... it's root is in the fear that oil marketers like to play upon...

Just like you use the correct tool for a particular job, you select the oil for the application. You don't just go to bigger wrenches for more protection.

Do you have a warranty on that car? If yes, use ONLY the oil BMW specs.

There are tens of thousands of posts on "What oil should I use in my BMW?" I'll leave it at that.

A

Edit: We still don't know the motor he is asking about....

I would ONLY use the manufactured recommended oil. BMW Longlife in the viscosity that is specific for your region.

oh yeah lol its the 2009 30i engine. ok im going to start using the german castrol 0w30 instead of the 5w30 from now on.

How about just buy the oil from the dealership. I have contacted Castrol in the past, and the only oil they suggested was the Castrol made for BMW which is only available at the dealership. Your choice - your X5.