oil consmption higher at high speed???

cut2qr · 05-19-2009, 09:31 PM

I know these m3's burn oil. I used 2l in 10k miles. today I took a 400 mile trip to the shore averaging 80 mph. My m ate 1 L . What the fcuk????

skim · 05-19-2009, 09:35 PM

i would assume so cuz i'd think high speed = higher RPM = more protection engine needs from increased friction = oil burning?

cut2qr · 05-19-2009, 11:42 PM

i drove my 911 c4 cab the same way nevr burned oil

VanM3Lover · 05-20-2009, 12:28 AM

My car has now 3500 mls, mix of hard and normal driving, never burnt any oil. At least not yet.

cut2qr · 05-20-2009, 12:43 AM

neither did mine until 5k

py0413 · 05-20-2009, 02:08 AM

here is mine too share

1800 kms first oil change
8000 kms 1st add 1L
14000 kms 2nd add 1L
17500 kms 3rd add 1L
19650 kms 4th add 1L

I do a lot of highway driving and most of the time in between 100km/h - 120km/h

E90M3CDFR · 05-20-2009, 02:27 AM

My current mileage is 15,400kms, most of it (90 percent) at European highway/autobahn speeds between 85mph and 160mph.

At around 13,000kms, the oil indicator dropped for the first time from the full/center mark to quarter mark (after a couple of weeks of autobahn driving) and has remained there since. Other than the initial break in oil change, the car has not had nor needed any top ups.

SenorFunkyPants · 05-20-2009, 02:38 AM

Quote:

Originally Posted by cut2qr

I know these m3's burn oil. I used 2l in 10k miles. today I took a 400 mile trip to the shore averaging 80 mph. My m ate 1 L . What the fcuk????

Thats not right at all...at that rate of oil consumption you should be able to see blue smoke coming out the exhaust. Its either a fault with the engine or the gauge.

jbtco · 05-20-2009, 09:44 AM

Have you rechecked the oil. The gauge seems with some users to give strange results on long runs. On a 500 mile run mine said it needed a litre but the next day on a 40 mile drive was 1/2 full and has not shifted since.

swiss_cornholio · 05-20-2009, 02:41 PM

Yes, it does burn oil at high speed. 800 miles at 120mph (trip to the nurburgring) mine uses 1/4 l.

rbk1115 · 05-20-2009, 02:52 PM

Quote:

Originally Posted by SenorFunkyPants

Thats not right at all...at that rate of oil consumption you should be able to see blue smoke coming out the exhaust. Its either a fault with the engine or the guage.

+1

Also, is your motor leaking oil anywhere?

MTROIS · 05-20-2009, 07:33 PM

Quote:

Originally Posted by E90M3CDFR

My current mileage is 15,400kms, most of it (90 percent) at European highway/autobahn speeds between 85mph and 160mph.

At around 13,000kms, the oil indicator dropped for the first time from the full/center mark to quarter mark (after a couple of weeks of autobahn driving) and has remained there since. Other than the initial break in oil change, the car has not had nor needed any top ups.

I guess you meant 85km/h and 160km/h!

Other than that it could make sense that at higher speeds and/or higher RPMs there is a higher Temp, and thus an increased gap between cylinder and piston... thus the engine burning more oil. May be some mechanical engineer will be able to help us on this one?

JCtx · 05-20-2009, 07:37 PM

Mine didn't burn any between 80 and 100 mph for 760 miles with only 700 miles on the clock, which surprised me, to be honest. Of course that's according to the darn computer; a dipstick is the only way to precisely know. I bet is we were to put 5/20 like most cars, it'd burn oil like a MoFo

.

Seriously, if you don't drive that aggressively, 1-qt every 2K miles is getting borderline unacceptable IMO. Talk to your dealer about doing an oil consumption test. Good luck.

jbeene · 05-20-2009, 09:18 PM

I bet its the sensor. My car had a faulty one. I changed the oil at break in and again at 5000km and will again at 12500km and then every 7500km thereafter. Clean oil just makes sense to me. I don't care about the expense, its an expensive car.

In between oil changes it hasn't burned a drop but after the last oil change it indicated a huge overfill and "return to the dealer immediately" so I sat around for 2 hours while they drained and measured the oil and confirmed it was the correct amount. They said drive it until they could get a new sensor in.

After about 4 days of driving it corrected itself and didn't budge. Now the new sensor is in and it hasn't budged a bit. It reads one bar below the top line.

I was diligent about break in and now drive the car relatively hard when the conditions permit. Most gear chamges are at about 5000 to 5500.

I've been told by techs that the engines perform and last better when they are revved. That logic seems to be holding up for me so far.

Next time you are in for service ask them to test the sensor.

M3-FAST · 05-21-2009, 02:28 AM

Hi guys, only picked up my E90 M3 last weekend and am a little concerned about it's oil consumption?

The electronic dipstick showed full when I picked it up, but after a weeks driving it is now on half way mark. I have done about 300 ish miles and am running her in properly. The DCT box has caught me out a couple of times being in manual mode in first instead of auto and the car has gone above 5500RPM but not a lot past it and only for a second or so before I realised and shifted into 2nd. Other than that it has had moderate driving.

Any views on this?

Anyone experienced similar?

05-19-2009, 09:31 PM	#1
cut2qr Private 1 Rep 67 Posts Drives: e90 M3 sedan Join Date: Nov 2008 Location: PA iTrader: (0)	oil consmption higher at high speed??? I know these m3's burn oil. I used 2l in 10k miles. today I took a 400 mile trip to the shore averaging 80 mph. My m ate 1 L . What the fcuk????
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05-19-2009, 09:35 PM	#2
skim Captain 142 Rep 660 Posts Drives: 07 Z4MC Join Date: Nov 2007 Location: SoCal iTrader: (0)	i would assume so cuz i'd think high speed = higher RPM = more protection engine needs from increased friction = oil burning? __________________ Future mod consideration: exhaust, pulley otherwise, very happy with how the m3 was born
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05-19-2009, 11:42 PM	#3
cut2qr Private 1 Rep 67 Posts Drives: e90 M3 sedan Join Date: Nov 2008 Location: PA iTrader: (0)	i drove my 911 c4 cab the same way nevr burned oil
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05-20-2009, 12:28 AM	#4
VanM3Lover First Lieutenant 20 Rep 394 Posts Drives: 4.0 V8 Join Date: Jan 2009 Location: Van iTrader: (0)	My car has now 3500 mls, mix of hard and normal driving, never burnt any oil. At least not yet.
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05-20-2009, 12:43 AM	#5
cut2qr Private 1 Rep 67 Posts Drives: e90 M3 sedan Join Date: Nov 2008 Location: PA iTrader: (0)	neither did mine until 5k
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05-20-2009, 02:08 AM	#6
py0413 Major 110 Rep 1,291 Posts Drives: Slow Join Date: Jul 2008 Location: BC iTrader: (2)	here is mine too share 1800 kms first oil change 8000 kms 1st add 1L 14000 kms 2nd add 1L 17500 kms 3rd add 1L 19650 kms 4th add 1L I do a lot of highway driving and most of the time in between 100km/h - 120km/h __________________ Must stop eating..............
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05-20-2009, 02:27 AM	#7
E90M3CDFR First Lieutenant 86 Rep 303 Posts Drives: E91 Sportwagon Join Date: Sep 2008 Location: NoVA iTrader: (1)	My current mileage is 15,400kms, most of it (90 percent) at European highway/autobahn speeds between 85mph and 160mph. At around 13,000kms, the oil indicator dropped for the first time from the full/center mark to quarter mark (after a couple of weeks of autobahn driving) and has remained there since. Other than the initial break in oil change, the car has not had nor needed any top ups.
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05-20-2009, 09:44 AM	#9
jbtco Captain 163 Rep 641 Posts Drives: F80 M3 Join Date: Nov 2008 Location: Scotland iTrader: (0)	Have you rechecked the oil. The gauge seems with some users to give strange results on long runs. On a 500 mile run mine said it needed a litre but the next day on a 40 mile drive was 1/2 full and has not shifted since.
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05-20-2009, 02:41 PM	#10
swiss_cornholio First Lieutenant 33 Rep 379 Posts Drives: E92 DTC M3 (AW/PS) Join Date: Mar 2007 Location: Zurich, Switzerland iTrader: (0)	Yes, it does burn oil at high speed. 800 miles at 120mph (trip to the nurburgring) mine uses 1/4 l.
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05-20-2009, 07:37 PM	#13
JCtx Major General 258 Rep 5,012 Posts Drives: No BMW yet Join Date: May 2008 Location: El Paso TX iTrader: (0)	Mine didn't burn any between 80 and 100 mph for 760 miles with only 700 miles on the clock, which surprised me, to be honest. Of course that's according to the darn computer; a dipstick is the only way to precisely know. I bet is we were to put 5/20 like most cars, it'd burn oil like a MoFo . Seriously, if you don't drive that aggressively, 1-qt every 2K miles is getting borderline unacceptable IMO. Talk to your dealer about doing an oil consumption test. Good luck.
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05-20-2009, 09:18 PM	#14
jbeene First Lieutenant 29 Rep 324 Posts Drives: 16 435i GC Join Date: Oct 2007 Location: Vancouver iTrader: (1)	I bet its the sensor. My car had a faulty one. I changed the oil at break in and again at 5000km and will again at 12500km and then every 7500km thereafter. Clean oil just makes sense to me. I don't care about the expense, its an expensive car. In between oil changes it hasn't burned a drop but after the last oil change it indicated a huge overfill and "return to the dealer immediately" so I sat around for 2 hours while they drained and measured the oil and confirmed it was the correct amount. They said drive it until they could get a new sensor in. After about 4 days of driving it corrected itself and didn't budge. Now the new sensor is in and it hasn't budged a bit. It reads one bar below the top line. I was diligent about break in and now drive the car relatively hard when the conditions permit. Most gear chamges are at about 5000 to 5500. I've been told by techs that the engines perform and last better when they are revved. That logic seems to be holding up for me so far. Next time you are in for service ask them to test the sensor. __________________ 16 435i xdrive Msport MPerformance 2 Ind Azurite on Opal
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05-21-2009, 02:28 AM	#15
M3-FAST Defected to the dark side..... 210 Rep 5,795 Posts Drives: BMW M5 LCi Join Date: May 2007 Location: Stafford, UK iTrader: (11) Garage List 2009 E90 M3 [10.00] 2007 325i M-sport C ... [9.00]	Hi guys, only picked up my E90 M3 last weekend and am a little concerned about it's oil consumption? The electronic dipstick showed full when I picked it up, but after a weeks driving it is now on half way mark. I have done about 300 ish miles and am running her in properly. The DCT box has caught me out a couple of times being in manual mode in first instead of auto and the car has gone above 5500RPM but not a lot past it and only for a second or so before I realised and shifted into 2nd. Other than that it has had moderate driving. Any views on this? Anyone experienced similar?
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