Oil Temp on HOT days

Mauryk · 06-29-2012, 03:19 PM

I have a 2010 335XI with a JB4. I do not have the factory oil cooler.

My normal oil temp is 230-240F (110-115C). Today in Northern Virginia it is extremely hot. Outdoor temp is 102F (39C), and my car thermometer read 107F (42C).

My oil temp was sitting at 210-220F (99-104C).

What is happening here? Why am I running so much COOLER when the outside temp is soaring?

Ideas anyone??

AddictedToBavarian · 06-29-2012, 04:28 PM

Same thing here! I was wondering too.

e1001usa · 06-29-2012, 05:10 PM

I dont know but you guys are lucky

Sam335ix · 06-29-2012, 05:53 PM

I was in dc two weeks ago with 90 degree weather and stop and go and for the first I reached 250... Today I was ok with wrong 240.

narutoramen · 06-29-2012, 11:20 PM

Maybe humidity plays into this and not just air temp?

E90_boostjunky · 06-30-2012, 02:48 AM

because you probably didnt drive long enough for the car to warm up, or you probably just did some stop and go driving, it was 110 in illinois with the heat index yesterday and my car was sitting right at 240-250 after driving for about 15-20 minutes, but then today when i went for a drive temp was 90-93 outside my car was sitting at 210-220 for awhile but then after driving for about 40 minutes it was right back to 240-250

NiVeDh · 06-30-2012, 03:10 AM

Quote:

Originally Posted by Mauryk

I have a 2010 335XI with a JB4. I do not have the factory oil cooler.

My normal oil temp is 230-240F (110-115C). Today in Northern Virginia it is extremely hot. Outdoor temp is 102F (39C), and my car thermometer read 107F (42C).

My oil temp was sitting at 210-220F (99-104C).

What is happening here? Why am I running so much COOLER when the outside temp is soaring?

Ideas anyone??

My observation is that the radiator fan runs more and/or faster when it's hot outside to regulate coolant temperature. This has the indirect effect of lowering oil temperature.

mAdTYzz · 06-30-2012, 03:51 AM

Stupid question i know, how do you check the temperature on a 2006 325I? Please don't hate me for asking i'm a newbie.

deadlyrhythm · 06-30-2012, 06:49 AM

Answer: Your fan runs more and humidity plays a HUGE factor in cooling efficiency.

I didn't know that 2010s didn't have the additional cooler! I thought that was only 2007s

AndreyT · 06-30-2012, 11:58 AM

Quote:

Originally Posted by deadlyrhythm

I didn't know that 2010s didn't have the additional cooler! I thought that was only 2007s

The additional cooler is a part of the Sport Package. You can have a car with Sport Package or without Sport Package regardless of the year. Maybe it is different with e92, but that's the way it is with e90.

aleksl · 06-30-2012, 02:05 PM

I have a factory oil cooler and no matter what my oil temp is always between 110-120C.

See5 · 06-30-2012, 08:30 PM

My car was running at 220-225F here in Atlanta. I thought those temps to be strange as well.

E90_boostjunky · 06-30-2012, 08:40 PM

Quote:

Originally Posted by deadlyrhythm

Answer: Your fan runs more and humidity plays a HUGE factor in cooling efficiency.

I didn't know that 2010s didn't have the additional cooler! I thought that was only 2007s

i have an 07 with an oil cooler comes with sport package.

tofu- · 06-30-2012, 09:59 PM

Your radiator fan was rockin n rollin because your ac was on. Drive around without the ac and your temps will be normal because the fan will only come on once your temp reaches a certain threshold.

WickedB · 06-30-2012, 11:39 PM

Quote:

Originally Posted by E90_boostjunky

i have an 07 with an oil cooler comes with sport package.

Unless your '07 has a build date before 03/07!

mundo74 · 07-01-2012, 09:13 AM

These cars have several cooling maps based on ambient temp, load etc.... It is quite possible that the higher amb temps call for the ~90C cooling map.

06-29-2012, 03:19 PM	#1
Mauryk Private 4 Rep 99 Posts Drives: 2010 335i Xdrive Join Date: May 2011 Location: Great Falls, VA iTrader: (1) Garage List 2010 bmw 335i xdrive [0.00]	Oil Temp on HOT days I have a 2010 335XI with a JB4. I do not have the factory oil cooler. My normal oil temp is 230-240F (110-115C). Today in Northern Virginia it is extremely hot. Outdoor temp is 102F (39C), and my car thermometer read 107F (42C). My oil temp was sitting at 210-220F (99-104C). What is happening here? Why am I running so much COOLER when the outside temp is soaring? Ideas anyone?? __________________ 2010 E90 335i Xdrive\| Titanium Silver Metallic \| Black Leather \| Premium, Sport, Nav, Cold \| Steptronic \| matte black grilles \| Cyba scoops \| pinstripes \| Rear Fog Mod \| Clear Reflectors \| WeissLicht AE \|More to come...\|
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06-29-2012, 04:28 PM	#2
AddictedToBavarian My other ride is a Bianchi Infinito 96 Rep 2,767 Posts Drives: Miss my E92 but love my E46 M3 Join Date: Apr 2011 Location: North Jersey iTrader: (2)	Same thing here! I was wondering too.
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06-29-2012, 05:10 PM	#3
e1001usa Private First Class 1 Rep 117 Posts Drives: 2007 335i Join Date: Sep 2011 Location: Maryland iTrader: (0)	I dont know but you guys are lucky
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06-29-2012, 05:53 PM	#4
Sam335ix Major 65 Rep 1,274 Posts Drives: 335 ix performance edition Join Date: Sep 2011 Location: Redskin Country iTrader: (0)	I was in dc two weeks ago with 90 degree weather and stop and go and for the first I reached 250... Today I was ok with wrong 240. __________________ 2011 e90 KW V1, JB4, BMS Dp, BMS Intake, CP, Alpina Flash, ISO, E85 Coming soon to the garage: 2014 M3 Maybe M5
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06-29-2012, 11:20 PM	#5
narutoramen New Member 2 Rep 23 Posts Drives: '07 328i E92 Join Date: Jun 2012 Location: Sac iTrader: (0)	Maybe humidity plays into this and not just air temp?
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06-30-2012, 02:48 AM	#6
E90_boostjunky Lieutenant Colonel 93 Rep 1,644 Posts Drives: BMW 335I E90 SGM Join Date: Dec 2011 Location: USA, IL iTrader: (1)	because you probably didnt drive long enough for the car to warm up, or you probably just did some stop and go driving, it was 110 in illinois with the heat index yesterday and my car was sitting right at 240-250 after driving for about 15-20 minutes, but then today when i went for a drive temp was 90-93 outside my car was sitting at 210-220 for awhile but then after driving for about 40 minutes it was right back to 240-250
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06-30-2012, 03:51 AM	#8
mAdTYzz Private 2 Rep 50 Posts Drives: 2006 E90 325i Join Date: Jun 2012 Location: Sweden iTrader: (0)	Stupid question i know, how do you check the temperature on a 2006 325I? Please don't hate me for asking i'm a newbie.
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06-30-2012, 06:49 AM	#9
deadlyrhythm Second Lieutenant 46 Rep 238 Posts Drives: 2009 BMW 335i Join Date: Apr 2009 Location: Edmonton, Alberta iTrader: (0) Garage List 2013 BMW X5d [0.00] 2009 335i [0.00]	Answer: Your fan runs more and humidity plays a HUGE factor in cooling efficiency. I didn't know that 2010s didn't have the additional cooler! I thought that was only 2007s
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06-30-2012, 02:05 PM	#11
aleksl Dinan 2 2 Rep 91 Posts Drives: 2008 BMW 335i sedan Join Date: May 2007 Location: Calgary, Canada iTrader: (0)	I have a factory oil cooler and no matter what my oil temp is always between 110-120C. __________________ 2008 335i Premium \| Sport \| 12mm rear spacers \| Dinan Stage2 \|
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06-30-2012, 08:30 PM	#12
See5 BMW Fan 449 Rep 725 Posts Drives: Nothing Join Date: Jul 2011 Location: Atlanta iTrader: (0)	My car was running at 220-225F here in Atlanta. I thought those temps to be strange as well.
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06-30-2012, 09:59 PM	#14
tofu- Banned 87 Rep 2,854 Posts Drives: 335i Jet Black/Coral Red Join Date: Mar 2010 Location: nyc iTrader: (4)	Your radiator fan was rockin n rollin because your ac was on. Drive around without the ac and your temps will be normal because the fan will only come on once your temp reaches a certain threshold.
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07-01-2012, 09:13 AM	#16
mundo74 Lieutenant 65 Rep 563 Posts Drives: F10M5 Join Date: Oct 2005 Location: P.Pines, FL iTrader: (2)	These cars have several cooling maps based on ambient temp, load etc.... It is quite possible that the higher amb temps call for the ~90C cooling map. __________________ More power please
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