Oil selection discussion, mainly viscosity

[TheMidnightNarwh]

Hey so I google this but I'm not getting a clear answer.

I bought a 2011 BMW 335is a few months ago. I did an oil change by putting the OEM stuff, which is Castrol Europeean formula with the BMW LL01 approval. I went with 0W-40 as it seems best to me that time.

0W-40 would provide good startup protection and when it warm good performacne right?

I'm ineterested in getting top tier oil for about 40$ more. I have 2 brand options, Liqui Moly 5W40 Leichtlauf Hi-Tec or Motul xcess something, that is also 5w40

Only thing that's avoiding me from pulling trigger is that 5W compared to 0W.

My owner's manual statesd 4 different oil grades and being BMW... you know they won't specefy smething specifally that wil llast a long time.

I do live in a cold area in the winter, I am in Ottawa Ontario but at the same time, it's not crazy blizzards and cold. Like the coldest it would get on a really cold cold day worst case I would say -30c . Usually it's ~ 20c.

So should I stick with Castrol euro oil 0w-40 or get a top tier that is 5w-40?

 

[Onetor]

Castro!

 

[dogememe]

Originally Posted by Onetor
Castro!


I thought we were discussing oil, not where in San Francisco I should go to get a date...

 

[OilUzer]

Your winter temps are border line 5W
I would use 0Wx
sorry for x Triple7even

 

[Oildudeny]

Castrol or Mobil is fine

 

[Popsy]

Liqui Moly 5W40 Leichtlauf Hi-Tec or Motul X-cess won't give you anything over Castrol 0W40, I would even say they are "inferior" (stricto sensu) oils.

Here (Europe) they are regarded as very average (Liqui Moly) and "not the best from Motul". But I know in the US it's something else. I'd stay with Castrol 0W40.

 

[OVERKILL]

Castrol 0w-40 is arguably a better lubricant than the two you are considering, stick with it.

 

[oil_film_movies]

Another vote for Castrol 0w40. Here in the states at walmart, its also very cheap. Great oil. Enjoy it's titanium. (You can feel it as you drive !!! hee-hee)

 

[TheMidnightNarwh]

Originally Posted by oil_film_movies
Another vote for Castrol 0w40. Here in the states at walmart, its also very cheap. Great oil. Enjoy it's titanium. (You can feel it as you drive !!! hee-hee)


Haha that's where I bought mine when I picked my parts in the states.

 

[TheMidnightNarwh]

On the BMW forum people are sharing that because 0W-40 there is a wider viscoicity range it "shears" the oil over time and isn't as good?

I plan to oil change around 7500 miles.

 

[BMWTurboDzl]

Originally Posted by TheMidnightNarwh
On the BMW forum people are sharing that because 0W-40 there is a wider viscoicity range it "shears" the oil over time and isn't as good?

I plan to oil change around 7500 miles.



There might be some truth to that if an owner is routinely tracking the car which I'm sure you're not. I would choose the 0w40.

 

[OVERKILL]

Originally Posted by TheMidnightNarwh
On the BMW forum people are sharing that because 0W-40 there is a wider viscoicity range it "shears" the oil over time and isn't as good?

I plan to oil change around 7500 miles.


Most of the 5w-40's are using thin Group III bases padded with VII. Castrol 0w-40 uses a good slug of PAO, so while it is also padded with VII to hit the visc target, it's likely no worse and in fact may be better than those 5w-40's in that regard.

Pennzoil Ultra Euro 5w-40 sheared more in service than M1 0w-40 did for example. So it isn't as simple as just assuming because the spread is wider it is going to be more prone to shear.

 

[TheMidnightNarwh]

Ok then, I'll stick with castrol 0w-40 bmw ll01

 

[OilUzer]

Originally Posted by OilUzer
Your winter temps are border line 5W
I would use 0Wx
sorry for x Triple7even

Correction: Triple_Se7en

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