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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > Oil Cooler Comparison



View Poll Results: Wht are your oil temps when driving normalls with oil cooler and without oil cooler
Factory Oil Cooler temps getting to 230-340 7 25.93%
No Oil Cooler temps getting to 230-240 4 14.81%
Factory Oil Cooler temps getting to 240-250 9 33.33%
No Oil Cooler temps getting to 240-250 3 11.11%
Factory Oil Cooler temps getting to 250-260 1 3.70%
No Oil Cooler temps getting to 250-260 3 11.11%
Voters: 27. You may not vote on this poll

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      02-03-2014, 10:11 PM   #1
tennis_pr0
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Oil Cooler Comparison

So there are about 500 threads on oil coolers. The general consensus is you don't need one unless tracking basically or pushing your car really hard for long periods of time.

For those with and without the factory oil cooler, I think an official oil temp comparison would be very helpful and a way to definitely see the overall differences between having a factory oil coolers verses not having one at all.

The vote will be for the highest it gets and with spirited driving in temps less than 90 degrees. We know when temps get past 100 that definitely makes a difference, but for most people, we don't live in climates like that. If you want to leave feedback and live in a very hot climate, please do so as that would definitely help.

Definitely leave any additional information on top of voting.

Me: I live in Philly, a hot day here is 85-90. Normal driving I will see around 240, spirited around 250. In the winter, with temps very cold, even with spirited driving I have not seen more than 230.

Last edited by tennis_pr0; 02-03-2014 at 10:18 PM.
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      02-03-2014, 10:41 PM   #2
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There's a typo in the poll.

The 1st choice should be "Factory Oil Cooler temps getting to 230-240" (NOT 230-340) -- 230-240 is where mine temp gauge is usually at.
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      02-03-2014, 10:55 PM   #3
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Sorry guys accidentally typed 340 instead of 240
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      02-03-2014, 11:06 PM   #4
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This summer when temps hit 118 she'll probably go into limp mode just driving to the grocery store
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      02-03-2014, 11:08 PM   #5
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I think what I am expecting to see here is a very close comparison between no oil cooler and factory oil cooler, this proving that the factory oil cooler is only important in protecting limp mode, which would only happen in super high temps with a ton of spirited driving.
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      02-04-2014, 03:14 AM   #6
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Quote:
Originally Posted by tennis_pr0 View Post
I think what I am expecting to see here is a very close comparison between no oil cooler and factory oil cooler, this proving that the factory oil cooler is only important in protecting limp mode, which would only happen in super high temps with a ton of spirited driving.
FWIW, I don't think this poll means much because it's based on unverified recollections of drivers of their oil gauge readings, which may or may not be accurate (both the recollection and/or the readings) and based on a variety of different driving styles and circumstances, none of which will be the same.

The only way to tell if an oil cooler REALLY makes a difference is to test identical cars with identical engines (with and without an oil cooler) using calibrated calibrated instruments in controlled settings, like on a race track, driving the cars in the same manner, which is not the case here.

So, I wouldn't make any conclusions based on the poll results, whatever they are, but for my $, I'd rather have one than not.
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      02-04-2014, 09:47 AM   #7
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Quote:
Originally Posted by swingshiftworker View Post
FWIW, I don't think this poll means much because it's based on unverified recollections of drivers of their oil gauge readings, which may or may not be accurate (both the recollection and/or the readings) and based on a variety of different driving styles and circumstances, none of which will be the same.

The only way to tell if an oil cooler REALLY makes a difference is to test identical cars with identical engines (with and without an oil cooler) using calibrated calibrated instruments in controlled settings, like on a race track, driving the cars in the same manner, which is not the case here.

So, I wouldn't make any conclusions based on the poll results, whatever they are, but for my $, I'd rather have one than not.
Well the only way the poll would be valid is if we got a lot of responses...
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      02-04-2014, 12:54 PM   #8
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Quote:
Originally Posted by tennis_pr0 View Post
Well the only way the poll would be valid is if we got a lot of responses...
Still wouldn't mean anything if the responses are inaccurate or unreliable, which they probably will be BUT if you think there's useful information to be had from the anecdotal reports, go for it.
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      06-15-2014, 04:31 PM   #9
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Thinking about adding another oil cooler or possibly upgrading my stock oil cooler.. But do i really need it?

My vote:
I have oil cooler
Normal driving: 200-220
Hard driving: 220-250

Stock except drop in k&n air filter. 6mt.
Mobil 1 0w-40
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      06-15-2014, 09:28 PM   #10
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Quote:
Originally Posted by AWDBooSTIn90 View Post
Thinking about adding another oil cooler or possibly upgrading my stock oil cooler.. But do i really need it?

My vote:
I have oil cooler
Normal driving: 200-220
Hard driving: 220-250

Stock except drop in k&n air filter. 6mt.
Mobil 1 0w-40
Hard driving seeing 250 isn't bad, atleast not enough to justify buying an aftermarket cooler, etc. IMO.

But, if you plan to go FBO, and drive the car harder than you currently do, for longer periods of time (Track, autocross, etc.) you may need to upgrade.
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      07-01-2014, 01:22 PM   #11
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Live in San Diego, a hot day 90-100. I see temps of 220-230. Spirited driving 230-250.

During the winter I barely see temps of 200, I'm more around 190

*EDIT* Have oil cooler with BMS Low Temp Thermo, FBO
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