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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > Oil leak , turbo oil lines



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      11-30-2019, 04:36 AM   #1
Raks16
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Oil leak , turbo oil lines

Hi All

Recently took my car to the dealer for a holiday inspection and they picked up an oil leak. I was told that it was leaking from the turbo oil feed lines and rear main seal. From what I have been told the leak is still minor but I will have to get repaired relatively soon. Is this this a common issue? The parts are not expensive but it’s $1000 + on labor costs to repair.

How serious can these leaks become ? Shouldn’t I repair them or just monitor oil levels and top up if necessary.

Thank you
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      12-02-2019, 04:09 AM   #2
Raks16
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Bump. Anyone experience this issue ?
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      12-02-2019, 09:08 AM   #3
weehe126
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Oil feed line is not common. Rear main seal is common. Honestly $1000 in labor doesn't sound bad as they have to drop the trans for the RMS and getting to the oil feed line is a PITA.
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      12-02-2019, 02:53 PM   #4
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This is how dealers make money. Find out for yoyrself first how big of a leak you have or if its jusy weeping.
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      12-03-2019, 02:50 AM   #5
Raks16
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Thank you all. I will look to get another workshop to look at and take it from there.
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      12-03-2019, 02:51 AM   #6
Raks16
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Quote:
Originally Posted by weehe126 View Post
Oil feed line is not common. Rear main seal is common. Honestly $1000 in labor doesn't sound bad as they have to drop the trans for the RMS and getting to the oil feed line is a PITA.
Quote:
Originally Posted by Pladi View Post
This is how dealers make money. Find out for yoyrself first how big of a leak you have or if its jusy weeping.
What would be the easiest way for me to do this? Sorry im not super techinical
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      12-03-2019, 12:10 PM   #7
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Had the o rings on the feed line replaced at 54k. Not sure how badly it was needed since my SA tacked it on when I took it in for CPO work.
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      12-03-2019, 03:13 PM   #8
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I found the easiest way to remove the oil feed line is to swap (upgrade) the turbo
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      12-15-2019, 12:54 AM   #9
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Quote:
Originally Posted by Turbod View Post
I found the easiest way to remove the oil feed line is to swap (upgrade) the turbo
I thought of this but unfortunately the cost of pure turbo in South Africa is quite high.
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      12-15-2019, 11:59 PM   #10
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Quote:
Originally Posted by Turbod View Post
I found the easiest way to remove the oil feed line is to swap (upgrade) the turbo
Wondering how you managed to achieve 3.6s 0-60 and an 11.7s 1/4 with a rwd n55 stock turbo
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      12-17-2019, 01:46 PM   #11
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Quote:
Originally Posted by n55rei View Post
Wondering how you managed to achieve 3.6s 0-60 and an 11.7s 1/4 with a rwd n55 stock turbo
Pretty sure he had PS2
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      12-18-2019, 07:27 AM   #12
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Quote:
Originally Posted by n55rei View Post
Wondering how you managed to achieve 3.6s 0-60 and an 11.7s 1/4 with a rwd n55 stock turbo
Quite a few people have ran high 11's with pwg N55's. EWG N55's have gotten down to low 11's. PS2's are down to mid-high 10's now.
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      12-18-2019, 09:46 AM   #13
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Quote:
Originally Posted by n55rei View Post
Wondering how you managed to achieve 3.6s 0-60 and an 11.7s 1/4 with a rwd n55 stock turbo
To be fair, he stated the cost of pure turbo is high.

This doesn't necessarily mean he is on stock.

Quote:
Originally Posted by Raks16 View Post
I thought of this but unfortunately the cost of pure turbo in South Africa is quite high.
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