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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Oil leak help, is the a turbo problem?



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      06-15-2014, 04:00 PM   #1
Nonecure
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Oil leak help, is the a turbo problem?

I have been noticing oil consumption lately and just added a quart. It has been 7k miles since my last oil change, but the oil consumption is more in the last 1k to 2k miles.

It looks like oil coming out of the pipe into the intercooler. I know we get some blowby, but this seems like too much. Anyone else experience this? Is it a turbo(s) going out? It does feel like more turbo lag than I am used to, I'll try to find some time to do a few logs.

Thanks, Doug
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      06-15-2014, 04:28 PM   #2
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You should try changing oil every 3k miles
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      06-15-2014, 04:51 PM   #3
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Quote:
Originally Posted by AK 335i View Post
You should try changing oil every 3k miles
What would that do other than waist time and money? My understanding is synthetic oil does not break down like a conventional oil, therefore it will continue to protect. Am I missing something?
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      06-15-2014, 05:19 PM   #4
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Quote:
Originally Posted by Nonecure View Post
What would that do other than waist time and money? My understanding is synthetic oil does not break down like a conventional oil, therefore it will continue to protect. Am I missing something?
Ya. That's like a peta thing to preserve the earth. U still wanna do oil every 5 at minimum
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      06-15-2014, 05:40 PM   #5
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Quote:
Originally Posted by AK 335i View Post
Ya. That's like a peta thing to preserve the earth. U still wanna do oil every 5 at minimum
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      06-15-2014, 07:22 PM   #6
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Quote:
Originally Posted by Nonecure View Post
What would that do other than waist time and money? My understanding is synthetic oil does not break down like a conventional oil, therefore it will continue to protect. Am I missing something?
Why guess? Send a sample to Blackstone for analysis.

www.blackstone-labs.com

Neil
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      06-16-2014, 07:42 AM   #7
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Quote:
Originally Posted by AK 335i View Post
You should try changing oil every 3k miles
Doesn't change the fact that he's losing oil by the intercooler though...

OP, are you positive it's coming out of that joint? Maybe check the oil filter housing gaskets at the front of the motor (top). It might be dripping down from there.
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