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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 > 335 oil temps....Normal at 240-250???



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      03-15-2007, 02:44 PM   #45
picus
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Quote:
Originally Posted by radgator1 View Post
335i Sedan, no air oil cooler. I was running 240-245ish when fully warmed up. Last couple of days my car has been running significantly cooler. I'm not sure if there is a corrleation or not but I removed my front plate frame 2 days ago. See this thread.


http://www.e90post.com/forums/showthread.php?t=51327

Again, i have no idea if there is a cause and effect but my car is definitely running cooler the last 2 days. I will have to see if it holds up. Next I am planning on removing the finishing rods to see if that helps as well. Anyone know how to remove them short of taking off the bumper cover or just breaking them off?

Just for grins can the sedan folks list whether or not they have a front plate frame on?
Not a sedan, but FWIW I noticed no diff in temps with no plate, and with a plate that partially blocked my FMIC. I also tried driving around with no front mesh, and noticed no difference in temps.
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      03-15-2007, 03:41 PM   #46
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This is a potentially serious issue...

After seeing what other peoples temps are and someone chiming in with a limp mode at 300 degrees, the situation does not look good.

We need to take this a step further. Does anyone know or have a connection with an engineer regarding these temps and their effect on this turbo engine. Also, does anyone have a schematic showing where this temp sensor is located. If it's located just after the oil leaves the turbos, it would be the answer.

I understand that BMW is a reputable company that would test and test and test and would probably never release an engine that would be detrimental to itself.

I also understand the possibility of the engine controlling temps to a certain degree to make the engine more efficient.

What I don't understand is the temp spikes. Also, that one of the persons posted saying that they tracked the car and it went into limp mode at 300.

Personally, I leased my car so I really shouldn't care. I do care however if the car goes into limp mode on the track do to overheated oil.
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      03-15-2007, 04:04 PM   #47
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Does anyone know what the "track" conditions were? How close can we expect to get to that on the street?

Basically, assuming the cooler is there to supplement the system for sustained high speeds (which would explain why BMW thought it wasn't needed in the USA), how fast for how long?
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      03-15-2007, 04:10 PM   #48
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Does anyone know what the "track" conditions were? How close can we expect to get to that on the street?

Basically, assuming the cooler is there to supplement the system for sustained high speeds (which would explain why BMW thought it wasn't needed in the USA), how fast for how long?
Both people I've personally spoken with have mentioned 2-3 hot laps before an overheat. My understanding of the oil cooler is even in cars with it, it is doing nothing more often than not. However under intense load it is there to assist in the cooling of the oil (duh), so that the oil can keep the head cool. When I spoke with the Ontario SA he made me feel a lot better about heat soak and the chance of overheating during regular driving, however during long periods of high speed driving, or a lot of WOT, he could not commit to saying the car would not have heat problems without the cooler.
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      03-15-2007, 06:01 PM   #49
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in a year there will hopefully be various intercooler and oilcooler upgrades on the aftermarket
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      03-15-2007, 06:24 PM   #50
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Amen to that but...

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in a year there will hopefully be various intercooler and oilcooler upgrades on the aftermarket
...Yeah but BMW should have known better than that.
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      03-15-2007, 11:01 PM   #51
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My highest temp thus far has been 255...I have an auto and no oil cooler as far as I am aware.


One thing I noticed is that the oil temp seems to keep rising with continued driving, whether hard or soft. If I drove for 24 hours straight I wouldn't doubt it would hit close to 300 - I could be wrong.
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      03-16-2007, 08:26 AM   #52
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Quote:
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My highest temp thus far has been 255...I have an auto and no oil cooler as far as I am aware.
I have a 6 speed supposedly with an oil cooler and my temps are the same. So....oil cooler or w/out cooler I think temps are the same.

Temperatures here in West Palm Beach, FL have been around 75-85 degrees.
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      03-16-2007, 09:49 AM   #53
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(AT/No cooler) I run around 240 normally, or up to 250 on the highway (sustained ~80-85mph). I don't run in DS mode much, but it's usually ~5deg higher than in D. The hottest I saw was 260 after about 30min of 110-120mph. Outside temps have been around 70-80deg so far. It looks like the car is still in control and adjusting the temps itself, but I don't want to find out where it fails.

It won't be 1-for-1, but when the outside is ~100, I would not be surprised to see 280 at high (road) speeds. There's almost no chance I'm going to spend any real time on a track until I get this resolved.
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      03-16-2007, 11:28 AM   #54
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I don't blame you...

If you bought the car and expect it to last, I would not track it at those temps.

I will submit a complaint to BMW corp this weekend. I think everyone that sees this should do the same. I will make a template of the complaint and each of you can download and submit to BMW.

If anything else, at least we need to find out if it's safe running at those temps and what BMW is willing to do if/when the engine siezes/fails.

I just don't want the engine to fail and some cowboy tech/mechanic tells me that I drove the car past it's limits and that it's not covered by warranty.:mad:
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      03-16-2007, 12:27 PM   #55
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link

More and more are noticing this problem:

http://www.bmwcca.org/node/7229
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      03-16-2007, 02:29 PM   #56
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my father has a uk spec car, where is the oil temp gauge?
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      03-16-2007, 02:47 PM   #57
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I'm not sure the UK cars have it; I saw the dash of one and it had an mpg gauge in place of the oil temp. If he does have it it's the small gauge under the tachometer.
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      03-16-2007, 02:57 PM   #58
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FWIW, my dismally unscientific contribution here is that I switched to Redline 5w40 (mainly to try and protect the turbos better) from the dealer-provided Mobil 1 5w30 and I seemed to have gotten better temps, but only a few degrees difference. But, as the weather is fluctuating I need to see. I'll see how the Redline holds up this Summer.

My old Porsche mechanic heavily involved in racing indicated their data logging showed Redline dropped track temps when compared to Mobil 1. Course, he coulda been trying to sell me on the more expensive oil as I had an oil change coming up.

Different environment tho -- he was prolly referring to air cooled engines.

I have no affiliation with Redline. There is prolly better oil out there.
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      03-16-2007, 03:05 PM   #59
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For the first time in a 3 Series model, the 335i Coupe's dual exhaust system runs at both sides of the vehicle - logical, as each contains its own turbocharger turbine and therefore requires extra space. At low loads, a flap channels most gas through one side to reduce low-frequency exhaust "rumble." The 335i Coupe features an air-to-oil external oil cooler mounted in one wheel well as opposed to the N52's coolant-to-oil unit.


this is from the BMW press release 8-2006
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      03-16-2007, 03:26 PM   #60
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Nice.

Quote:
Originally Posted by turbojet3 View Post
For the first time in a 3 Series model, the 335i Coupe's dual exhaust system runs at both sides of the vehicle - logical, as each contains its own turbocharger turbine and therefore requires extra space. At low loads, a flap channels most gas through one side to reduce low-frequency exhaust "rumble." The 335i Coupe features an air-to-oil external oil cooler mounted in one wheel well as opposed to the N52's coolant-to-oil unit.


this is from the BMW press release 8-2006
Thanks for your post.
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      03-16-2007, 04:50 PM   #61
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That's why my friend switched to Eneos, and he seem to be happy since. Aftermarket oil cooler can be a headache sometimes. My old car with a permacool oil cooler gave me the most trouble even with the rest of the custom T3/T4 turbo... oil leaks, lines rubbing, blah blah, most of the problem I had after I got the custom turbo done was on the oil cooler itself. Once I was up at big bear, the entire steel braided hose for the oil cooler feed line popped off due to the high pressure at cold start. I was stuck on the side of the mountain road for 2 hours that night, not fun at all.
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      03-17-2007, 12:51 AM   #62
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Actually put some miles on my car today for the first time since the day I got pick her up. After driving around 100 miles, I noticed that the temp reached a high of 235 and when I pulled in the garage was at 220.

While the speed varied at times since I was showing a few friends and drove them around their neighborhood for a couple minutes. The average speed on the freeway was around 75mph. On the way to my parents at 6:30, I was doing a constant 80 for at least 10 minutes.
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      03-17-2007, 11:13 AM   #63
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Okay, well the plate frame thing didn't hold up. Yesterday the cars was running consistently at 240-245. Its weird because the outside temp was no different than the previous 2 days when it wass running at 225 so I really have no idea why it ran so much cooler for those 2 days I'd like to see more data related to if changing the oil can actually make the car run cooler. I just cant help but wonder what is going to happen when summer arrives with all of us folks in SoCal, FL, TX, etc. Pretty much anywhere can get in the 90's.
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      03-17-2007, 02:45 PM   #64
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Quote:
Originally Posted by picus View Post
I'm not sure the UK cars have it; I saw the dash of one and it had an mpg gauge in place of the oil temp. If he does have it it's the small gauge under the tachometer.
yeah that is where the mpg gauge is, pointless really when you have the trip computer anyhow!

so how will anyone with a uk spec car know the oil temp or even water temp of there engine?
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      03-17-2007, 06:03 PM   #65
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That's a good question.
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      03-17-2007, 07:11 PM   #66
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Im curious myself as to these oil temps. Ive been in the aftermarket scene for about 6-7 years now and never had oil temps sitting this high. My first drive in one (auto coupe) then temps where hanging up around 240ish or so. Somewhat concerned me, so I pulled over to see what it would do, and it just sat there, and continued going UP!. But no lights or anything on the dash lol.

I'll be picking my MT sedan up next friday, so I will see how things go. My friends are going to Poconos on May 5th to run the south course (since I've never been road racing and always wanted to try, I figured Id go) but all this reading about very high oil temps makes me reconsider

But now that I think of it, my old Porsche ('86 951) use to run up in the 220-240 as well with oil temps....but that was beating on it down a straight stretch of hwy for about 2-3 minutes. Crusing it would sit around 200 degrees. In the cold, with a fresh oil change, it would sit around 175-180 degrees.

Lease or not, I take care of my cars as if they were my own. I plan on changing the oil every 3k, regardless of this 15k service interval. Call me outdated and crazy, but hey when the oil's free (working for the dealer has its perks), it can't hurt it.

I'm tempted to try the 10-60 oil we use for the S54 and S82 engines. Its a hair thicker, and given they use it for the M series, should provide some more protection. After the 1200 mile break in oil change, I'll give it a shot and see what happens. After all its a lease right?
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