What engine oil do you guys use??

[94502]

I am still debating on whcih oil I should use on my X5..

1. Mobil 1 5w30
2. Mobil 1 0w40
3. BMW Oil 5w30... Lazy to go dealer. or
4. Castrol Synthetic 5w30 the ones at Walmart..

I have used the Mobil 1 5w30 on my X5 and I am not sure was that the cuase of my pan gasket leak. Does the leak have anything to do with the leak?? I had the gasket replaced by the dealer under warranty. Well I want to know what kind of oil you guys use for oil change on the X5.. Thanks everyone.

[Aimster]

Castrol Synthetic 5w30

[SuperGreg]

Originally Posted by Aimster

Castrol Synthetic 5w30

[withidl]

I have 88,000+ miles on my 2001 4.4i. While under warrenty I used Gastrol Synthetic 5W-50. Since warranty expired I have used Mobil 1 15W-50 (I live in Houston; would be too viscous/thick for extremely cold Northern climates).

I've pulled a 31 foot 8,300 pound GVWR travel trailer over 30,000 miles with my X5 and the higher viscosity engine oil is best for a highly loaded engine, but is equally beneficial for the longevity of any engine regardless of load (all you'll sacrifice is a fraction of a mile per gallon of gas due to greater fluid resistance).

[AzNMpower32]

Yup Castrol Syntec 5W-30 here too. I'm lookin for this supposed "European Castrol" rated at 0W-30 though...........

[Tomaz]

Amsoil 5W-30. I go 10K between changes and am never down a quart with 70K miles on my 4.4.

[asawadude]

Mobil 1 0w40 - I have 1-2 cases of it sitting in my garage at all times. It meets BMW's Longlife 01 standard.

http://www.mobiloil.com/USA-English/...l_1_0W-40.aspx

[motordavid]

The BMW stuff outta their 55 gal barrel when it was on
their dime.

Castrol Syntec 5W-50 on my dime...occasionally topped up
with Mobil One 5W-30, and the motor doesn't care.
GL,mD

[Boatrider]

Mobil 1 Extended Life (15,000) 5W30, changed every 10K or once every 6 months....2002 X5 3.0L