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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 01-06-2010, 08:39 PM
davenotize's Avatar
davenotize davenotize is offline
03 530 S/P for sale!!
Location: Miami FL
 
Join Date: Dec 2008
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Mein Auto: 03 bmw 530s/p 02 bmw 525
Castrol 10w60 TWS motorsport oil for BMWs

I was reading about this oil the dealership sells, i have a few friends with new m3s and m5 and thats all they put in the engine....what kind of effect will i get if i add this to my engine? any experiences/results????
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Old 01-06-2010, 09:18 PM
font9a font9a is offline
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Location: Austex
 
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Mein Auto: 335i
Q: what kind of effect will i get if i add this to my engine

A: A lighter pocketbook :-P
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  #3  
Old 01-07-2010, 04:37 AM
franka franka is offline
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Mein Auto: E39 540i Sport
You will get no benefit from running a heavier wt oil. It will actually cost you more. First due to the higher cost. Second the higher viscosity will be a greater drag on the engine.

Your engine does not require it. Its like putting premium fuel in an engine that doesn't require it.

You will be moving backward instead of forward.
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