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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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Old 04-14-2015, 10:59 AM
fiveseven fiveseven is offline
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Location: Poland
Join Date: Oct 2014
Posts: 7
Mein Auto: E39 530i 2001

After leaving the car for the whole night with the dipstick taken out I could read the level pretty well. It was low and that's why I wrote that I cannot see any improvement in the oil consumption after installing OCT+PCV.

I've tried to smell gas in the oil but there was no evident smell.

After ~7k miles the oil is still transparent but for sure darker then the fresh one.

I'm changing my oil this summer so I will replace the sensor at the same time.

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Old 04-17-2015, 03:12 PM
dbarton62 dbarton62 is offline
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Location: Canada
Join Date: Nov 2012
Posts: 19
Mein Auto: 04 Z4 3.0 S/C 6 speed
So I did the described catch can PCV mod over the winter and the vacuum it pulls is amazing.
My valve cover bolts had to be snugged down to stop vacuum leak I could hear once the engine was shut down, which I could never hear before.

Word of warning make sure the PCV valve itself is facing the right direction. Ask me how I know.

Threads towards the IM.
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