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E90 M3 (Sedan) | E92 M3 (Coupe) | E93 M3 (Convertible) (2008-2013) {Engine: S65 - Max Hp: 414 hp (420 hp Euro) at 8,300 rpm / 295 lb/ft at 3,900 rpm}


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Old Wed, Feb-01-2017, 08:47:39 PM   #1
rockitpras
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Default E92 M3 oil temp

Hi guys,

Sorry to pester you all if this topic has been broached previously.

I've noticed in the last few weeks that my E92 M3 2012 oil temp, has been running over 100c ( more like 105 - 130c ). Now I've had her for 2.5 years now, and she's never been in that sort of temperature bracket, event after being driven hard.

Now all of a sudden, she gets above 100 on a normal drive. The temp rises quickly and drops very quickly. There is no associated noise with the temperature change. Car oil level is still in the green. I've just had the throttle actuator, number 8 coil, and gear box sump replaced.

I've checked her into a BMW dealership, cos she's still under MP, and they've had a look, taken for a test drive, had the temperature rise.. but say it's normal.

I'm not sure where to go from here.

I guess I'd like to know if anyone else has, or, is currently experiencing the same sort of thing? And if not, can someone point me in the right direction as to what the problem may be, if there is even a problem...

Thanks for the help guys.

Oh... she only has 43000kms on the clock.

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Old Thu, Feb-02-2017, 12:40:52 AM   #2
Sephiroth
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Default Re: E92 M3 oil temp

Its not uncommon to get to and above 210F (~100C) and stay there under normal conditions. What oil are you using? Rod bearings changed?
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Old Thu, Feb-02-2017, 03:31:04 AM   #3
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Default Re: E92 M3 oil temp

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Originally Posted by Sephiroth View Post
Its not uncommon to get to and above 210F (~100C) and stay there under normal conditions. What oil are you using? Rod bearings changed?
Still using the Castro 10w60 as per dealership recommendation. Haven't ventured down the liquid moly path as yet. Local dealerships have become extremely sticky with MP down here, and find any reason to void them.

Rod bearings haven't been changed. Do you think that, that may be a cause?
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Old Thu, Feb-02-2017, 12:35:46 PM   #4
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Default Re: E92 M3 oil temp

Some say their oil temps were going up before they changed the bearings and were down after. But I have no idea whether this is your issue. Could just be your oil cooler fins have gotten more bent from road debris. While I changed my rod bearings as preventative maintenance, there is considerable debate on the subject. The most info is over at m3 post dot com
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Old Thu, Feb-02-2017, 02:40:05 PM   #5
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Default Re: E92 M3 oil temp

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Originally Posted by pbonsalb View Post
Some say their oil temps were going up before they changed the bearings and were down after. But I have no idea whether this is your issue. Could just be your oil cooler fins have gotten more bent from road debris. While I changed my rod bearings as preventative maintenance, there is considerable debate on the subject. The most info is over at m3 post dot com
Thanks! I'm suspecting that the bearings are on their way out.. but the dealerships won't hear about it until the motor fails completely.
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Old Thu, Feb-02-2017, 08:56:58 PM   #6
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Default Re: E92 M3 oil temp

There is no simple way to check. If spending 8 hours getting in and out to check, it adds no time to replace. Just the parts cost, which is $500 to $800 depending on what bearings and bolts you use.

On an 08-10 car, you can do an oil analysis, but that is not guaranteed. Later cars have non lead bearings so the oil analysis may not show anything. And there have been cars that have failed with good oil reports.

It is hard to balance the worry against the reality that 95% of these cars are doing fine on original bearings so far. Over on m3 post, many have posted picture of replaced bearings and it seems like 95% of the replaced bearings looked pretty worn. If it was the other way around, I would tell people the risk is pretty small.
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Old Thu, Feb-02-2017, 09:18:41 PM   #7
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Default Re: E92 M3 oil temp

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Originally Posted by pbonsalb View Post
There is no simple way to check. If spending 8 hours getting in and out to check, it adds no time to replace. Just the parts cost, which is $500 to $800 depending on what bearings and bolts you use.

On an 08-10 car, you can do an oil analysis, but that is not guaranteed. Later cars have non lead bearings so the oil analysis may not show anything. And there have been cars that have failed with good oil reports.

It is hard to balance the worry against the reality that 95% of these cars are doing fine on original bearings so far. Over on m3 post, many have posted picture of replaced bearings and it seems like 95% of the replaced bearings looked pretty worn. If it was the other way around, I would tell people the risk is pretty small.
Really appreciate the feedback! I'm going to see what I can get done at the dealership. If I have any joy, I'll post it up here.
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Old Thu, Feb-16-2017, 03:38:11 PM   #8
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Default Re: E92 M3 oil temp

Not sure if this will help, but my rebuilt motor (RS 4.6 Stroker) will run anywhere between 180-210F depending on how I drive. If I'm romping on it I'll see 210, but I've been surprised on several occasions how fast this car cools down...I mean i'm cruising on the highway and I literally see my oil temps dropping slowly, they usually hang around 190ish. Granted ambient temps where I live are 60-70's year round.
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Discussing E92 M3 oil temp in the E90 M3 (Sedan) | E92 M3 (Coupe) | E93 M3 (Convertible) (2008-2013) Forum - {Engine: S65 - Max Hp: 414 hp (420 hp Euro) at 8,300 rpm / 295 lb/ft at 3,900 rpm} at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)