After Break-In Oil Change

Pylon · 09-25-2009, 06:43 PM

Changed my oil after about 3000 miles at the dealer. Now the idle is rougher and it seems like my fuel mileage is worse. =S Any ideas?

satakal · 09-28-2009, 01:44 PM

changing oil would have zero effect on those things. It would have to be something else.

F32Fleet · 09-28-2009, 02:57 PM

You performed a pre-mature drain of the BMW break in oil that comes in all our cars. As a result the engine is experiencing more friction, causing glazing of the cylinder walls and a tremendous amount of blow-by. I suspect your fuel pump will fail within the next 1k miles.

(in otherwords,...don't worry about it).

samchoi604 · 09-29-2009, 01:14 AM

Quote:

Originally Posted by satakal

changing oil would have zero effect on those things. It would have to be something else.

+1

It's either something else came up (like an impending HPFP failure), or your mind is playing you.

FCP Euro · 09-29-2009, 10:32 AM

+2

If anything, the oil change would make it a little bit better. Are you getting any kind of Check Engine Light?

Potty_Pants · 09-29-2009, 11:05 AM

how long did they have your car ? if it's longer then 2 hrs they could have updated the software.

ppp

09-25-2009, 06:43 PM	#1
Pylon First Lieutenant 23 Rep 302 Posts Drives: 2009 BMW 335i Join Date: Nov 2008 Location: Toronto, Ontario iTrader: (1)	After Break-In Oil Change - Feels WORSE? Changed my oil after about 3000 miles at the dealer. Now the idle is rougher and it seems like my fuel mileage is worse. =S Any ideas? __________________ SOLD 2009 E92 335i M-Sport \| Alpine White \| Navi \| Audiophille \| 19" 225M Rims
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09-28-2009, 01:44 PM	#2
satakal Major 99 Rep 1,476 Posts Drives: e46 Join Date: Nov 2007 Location: socal iTrader: (2)	changing oil would have zero effect on those things. It would have to be something else.
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09-28-2009, 02:57 PM	#3
F32Fleet Lieutenant General 3908 Rep 10,606 Posts Drives: 2015 435i Join Date: May 2005 Location: Southeastern US iTrader: (0)	You performed a pre-mature drain of the BMW break in oil that comes in all our cars. As a result the engine is experiencing more friction, causing glazing of the cylinder walls and a tremendous amount of blow-by. I suspect your fuel pump will fail within the next 1k miles. (in otherwords,...don't worry about it).
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09-29-2009, 10:32 AM	#5
FCP Euro Lieutenant 10 Rep 462 Posts Drives: Volvo 850 T5 Join Date: Aug 2009 Location: Old Saybrook, CT iTrader: (0)	+2 If anything, the oil change would make it a little bit better. Are you getting any kind of Check Engine Light? __________________ sales@fcpeuro.com FCP Euro - European Car Parts Specialists
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09-29-2009, 11:05 AM	#6
Potty_Pants Colonel 70 Rep 2,189 Posts Drives: 2012 Genesis Sedan Rspec Join Date: Apr 2007 Location: Southern NJ iTrader: (0)	how long did they have your car ? if it's longer then 2 hrs they could have updated the software. ppp __________________ Olds Starfire > Chevy Malibu > Isuzu I-mark RS & Honda Magna 500 > Grand Am GT & YSR50 > Nissan Maxima & Ninja 750 > X-Wife > Hyundai Excel > Honda Prelude > Honda Accord > Honda Prelude & Ninja 250> Infiniti G35 > E90 335i > Hyundai Genesis Rspec, Hyunadai Sonata > Kia Sorento > Honda CRV-EX
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