Hello.
I recently changed oil at 45000 km service (~ 28 000 miles).

The seller at shop recommended MOBIL Super 3000 X1 5W-40 and that is what I purchased, now looking trough older receipts I see previous owner used Mobil 5W30.

I was wondering if I should flush the 40 it and put 5W30 again ?
Anyone knows more about these details or maybe someone else used 5W40 in Evo X ?

Since I got the car with 5W30 in it, it ran great and no oil consumption or anything, I want to make sure I will not change this

Thanks.

 

The last number is, how heavy or thick your oil when its hot. In a hot summer the 40 is good or heavy track racing use. But since the winter coming and you are in Romania it will be too thick. Unless you have a build engine. But i wouldnt flush it out. It is not end of the world. There is no 0 below yet.

 

You should be just fine. It's as Robeve RS says. Last number is thickness when hot. Thicker is good for summer time and thinner is good for winter.

 

Thanks for the replies.

I *think* I hear some slight knocks in the engine (at idle) and I didn't hear that before, I am afraid that if it is too thick then maybe it is not lubricated properly.

But maybe I will keep it for 1-2 months and then get 5W30.

 

no you don't. it's fine, don't mess with it.

 

Esti ok pana la schimbu urmator:-) . Data viitoare schimba inapoi. sa fi sigur ca e syntetic. Ai noroc.

 

Salut cla2000

This one says "Fully Synthetic" too on the box, I heard that in US just Mobil One is fully synthetic, but here "MOBIL Super 3000 X1 5W-40" says "Fully Synthetic" too.

I guess I have to leave it for now, but most people say is not that good for winter, I will see how it runs.

Thanks.

 

Didn't mobil one shear extremely easily? I remember seeing some examples of it going up against Rotella T6.

 

Sure.