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      08-22-2009, 01:59 PM   #1
chrisE92
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240F-- normal oil temp for a E92 328i?

My oil temp guage would always point directly at 210F when warmed up; no more and no less. Lately, I got an exhaust installed and now notice that my oil temp guage rises to 240F when the car's fully warmed up. Is this normal? I get paranoid over little things like this.

Just want to get an idea of what other 328i owners are getting. Thanks.
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      08-22-2009, 02:22 PM   #2
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don't worry. Remember, your E92 328 was only given an dash with an oil temp gauge because BMW had left overs . The E90 328/330 do not have them and they ahve the same or slightly more powerful engine.
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      08-22-2009, 02:25 PM   #3
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Could it be that with the new exhaust the engine is running slightly lean and thus running hotter? Did you change just the muffler?
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      08-22-2009, 02:31 PM   #4
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Quote:
Originally Posted by CHARLEYBROWN View Post
Could it be that with the new exhaust the engine is running slightly lean and thus running hotter? Did you change just the muffler?
yeah, it's just axle-back. Does less backpressure cause the engine to run slightly lean? If so, is this something I should worry about?
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      08-22-2009, 02:34 PM   #5
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Quote:
Originally Posted by chrisE92 View Post
My oil temp guage would always point directly at 210F when warmed up; no more and no less. Lately, I got an exhaust installed and now notice that my oil temp guage rises to 240F when the car's fully warmed up. Is this normal? I get paranoid over little things like this.

Just want to get an idea of what other 328i owners are getting. Thanks.
wait since when do 328 have oil temp gauges i thought they had the mph BS gauge

sorry didnt mean to thread jack
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      08-22-2009, 02:41 PM   #6
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wait since when do 328 have oil temp gauges i thought they had the mph BS gauge

sorry didnt mean to thread jack
np. all E92's have the oil temp guage, regardless of engine model. the e90 328's don't have it
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      08-22-2009, 03:25 PM   #7
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My 09 328i coupe since day one idles at 240
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      08-22-2009, 03:45 PM   #8
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My 09 328i coupe since day one idles at 240
now that's the kind of reply that makes me feel a little better. haha thanks
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      08-22-2009, 04:01 PM   #9
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240 seems high for an N/A engine..
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      08-23-2009, 12:52 AM   #10
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240 seems high for an N/A engine..
really? Since the first day I got the car its been at 240 after I ride it for 20 min or so. Thought it was pretty normal as 250 is right in the middle.
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      08-23-2009, 01:44 AM   #11
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really? Since the first day I got the car its been at 240 after I ride it for 20 min or so. Thought it was pretty normal as 250 is right in the middle.
wait, 250 is in the middle for you? so whats on the ends of the gauge? maybe they changed this for 09's, cause for me, the ends read 120 and 300, and right down the middle is 210.
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      08-23-2009, 08:10 AM   #12
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Quote:
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wait, 250 is in the middle for you? so whats on the ends of the gauge? maybe they changed this for 09's, cause for me, the ends read 120 and 300, and right down the middle is 210.
Most cars that have WATER temp gauges 210 is the middle as well...
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      08-23-2009, 09:22 AM   #13
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wait, 250 is in the middle for you? so whats on the ends of the gauge? maybe they changed this for 09's, cause for me, the ends read 120 and 300, and right down the middle is 210.
2007.5 (3/07 on) they changed the middle to 250 so it brought the needle back to the middle (or close to it) for normal operating temp. What's annoying is the gauge takes forever to move in the winter since it starts higher.
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      08-23-2009, 10:29 AM   #14
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Quote:
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Most cars that have WATER temp gauges 210 is the middle as well...
I'm certain it's the engine oil temp gauge. I checked my manual just now. I guess I shouldn't be too worried if the newer models have 250 in the middle.
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      08-23-2009, 11:18 AM   #15
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Quote:
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now that's the kind of reply that makes me feel a little better. haha thanks
Hi,

Not to add to your paranoia, but...

It's not whether other 328's are at 240 or 210 but rather that YOUR oil temperature went up after an exhaust modification. Your original concern is a valid one.

I would do some research into this, perhaps contact the exhaust manufacturer or speak to others who have used the same. While the engine management should compensate and keep the mixture on spec, other things may be going on with respect to back pressure.

Does this exhaust have the two-stage exhaust like the original one does (where it opens the second pipe under computer control)?

I worry about such things too. Why the change? Why the change?

Regards,
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      08-23-2009, 12:10 PM   #16
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Believe me, I'm still paranoid. I'm scared of the long-term effects this may have on the car.
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      08-23-2009, 02:30 PM   #17
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The '09 328i E93s have the oil temp gauge too, and 250F is the middle. Once warmed up I would say mine hovers between 230-240F.
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      08-23-2009, 04:00 PM   #18
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Quote:
Originally Posted by chrisE92 View Post
My oil temp guage would always point directly at 210F when warmed up; no more and no less. Lately, I got an exhaust installed and now notice that my oil temp guage rises to 240F when the car's fully warmed up. Is this normal? I get paranoid over little things like this.

Just want to get an idea of what other 328i owners are getting. Thanks.
250 is right in the middle for me and warmed up, it hovers around 230-250
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Originally Posted by Socom View Post
don't worry. Remember, your E92 328 was only given an dash with an oil temp gauge because BMW had left overs . The E90 328/330 do not have them and they ahve the same or slightly more powerful engine.
insecure?
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      08-23-2009, 04:12 PM   #19
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Quote:
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don't worry. Remember, your E92 328 was only given an dash with an oil temp gauge because BMW had left overs . The E90 328/330 do not have them and they ahve the same or slightly more powerful engine.
Seems like you REALLY wanted that oil gauge
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      08-24-2009, 07:51 AM   #20
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Quote:
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Seems like you REALLY wanted that oil gauge
lol..exactly. All I need is something else to be OC over.

I remember when BMW went to a buffered water temp gauge on with the E46 because you BMW had all these people worried about temp fluctuations. Kinda like what you're seeing here. I'm honestly not surprised BMW didn't install a bufferred* oil gauge.

There's nothing special about the E92 328 vs the E90 328/330. Oil temp gauge on the E92 328 is all about keep up with the "coupes are sporty" mantra.

IMO..cooling system failures are sudden and catastrophic (blown hose, radiator, etc etc) so temp gauge is of no help.

*buffered gauge: Needle reads in the middle although the actual temp is fluctuating between cool & overheat.
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      08-24-2009, 09:59 AM   #21
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My 08 328i sometimes reads as high as 250 (summer with A/C on, going uphill ), but usually stays right in the area of 220-240.

-A
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      08-24-2009, 10:54 AM   #22
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I'm usually right around 220..
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