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F10 / F11 (2011 - 2016)
The sixth generation of the BMW 5 Series Sedan (F10) was produced from 2011 - 2016 with LCI updates arriving in 2014. In the US BMW offered a hatchback 5 Series Gran Truismo (F07) and the rest of the world also go a Station Wagon/Touring version F11.

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  #1  
Old 09-16-2018, 02:47 PM
den550 den550 is offline
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Normal Coolant Temperature for a 2015 550i xdrive

I'm aware of the engine issues in the earlier N63 variant of this engine and I'm trying to be aware of the coolant temps, perhaps overly so.

So what is the normal temp range? I've noticed temps hitting as high as 107c, but this in 91F (32C) ambient temperature. Bear in mind I was not pushing the car hard at all, as I had the family in the car.

Normal?
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  #2  
Old 09-17-2018, 08:58 AM
Simon-Munich Simon-Munich is offline
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This is normal. My had today while normal driving 108c by 25C outside.
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  #3  
Old 09-17-2018, 09:35 AM
Chicago550x Chicago550x is offline
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Same for my 2016 550xi

Also I add about 1 qt of oil every 5000 miles
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  #4  
Old 09-17-2018, 09:36 AM
Finefrau Finefrau is offline
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This is an interesting topic.
My 535d is oscillating between 99-104C @ 15C amb T.
I've owned 3 previous 5's (E39 525d, 2x E60 530d) and all had lower temps, around 80-88C.
I wonder why BMW chose to this higher working temp for N57 (dont know about previous petrol engines).
It's strange because all engines used full synth 5W30 and looking at 20 degrees difference lowers the viscosity a lot. Also heat capacity of water is different.
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Last edited by Finefrau; 09-17-2018 at 09:37 AM.
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  #5  
Old 09-17-2018, 02:55 PM
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Flatland328 Flatland328 is offline
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Quote:
Originally Posted by den550 View Post
I'm aware of the engine issues in the earlier N63 variant of this engine and I'm trying to be aware of the coolant temps, perhaps overly so.

So what is the normal temp range? I've noticed temps hitting as high as 107c, but this in 91F (32C) ambient temperature. Bear in mind I was not pushing the car hard at all, as I had the family in the car.

Normal?
Make sure that you aren't looking at the oil temperature gauge.......
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  #6  
Old 09-26-2018, 08:57 AM
Jacob Castle Jacob Castle is offline
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2011 550i - I got this car at 30K miles in 2014 and it always ran very, very hot - it never overheated, I guess that's just how these cars run. So hot that after my evening commute of 25 miles stop/go when I would park the car in the garage the fans would continue to run for quite a while. On really hot days I open the hood when I park it (in the garage).

Even though I never had overheating problems, I was scared about blowing a head gasket anyway. I did two things which helped. I bought a new coolant reservoir cap and added one of those coolant additives. This helped quite a bit and the car does run cooler now, noticeably cooler.

If your car is more than 3 years old I would go on RockAuto and buy a new cap for $5. The coolant needs pressure in the system to work. These caps eventually wear out and won't allow the cooling system to pressurize - especially in high performance engines like the N63 that run really hot. Also, change the coolant! It doesn't last forever.
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Old 09-26-2018, 09:10 AM
Jacob Castle Jacob Castle is offline
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Quote:
Originally Posted by Finefrau View Post
This is an interesting topic.
My 535d is oscillating between 99-104C @ 15C amb T.
I've owned 3 previous 5's (E39 525d, 2x E60 530d) and all had lower temps, around 80-88C.
I wonder why BMW chose to this higher working temp for N57 (dont know about previous petrol engines).
It's strange because all engines used full synth 5W30 and looking at 20 degrees difference lowers the viscosity a lot. Also heat capacity of water is different.
My experience has been higher operating temperatures and thinner oils are wholly related to emissions certification. At least for gas engines they typically like to run around 180-190F... but in the late 90s/2000s almost all the manufacturers increased temps to well over 200F which results in a more complete burn for gasoline, but isn't especially good for the engine or performance. Oil also acts as a coolant, and thicker oils will provide better cooling potential. So the move to higher operational temperatures and thinners oils was to drive those emissions and MPG requirements.
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Old 09-26-2018, 09:19 AM
den550 den550 is offline
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Quote:
Originally Posted by Jacob Castle View Post
2011 550i - I got this car at 30K miles in 2014 and it always ran very, very hot - it never overheated, I guess that's just how these cars run. So hot that after my evening commute of 25 miles stop/go when I would park the car in the garage the fans would continue to run for quite a while. On really hot days I open the hood when I park it (in the garage).

Even though I never had overheating problems, I was scared about blowing a head gasket anyway. I did two things which helped. I bought a new coolant reservoir cap and added one of those coolant additives. This helped quite a bit and the car does run cooler now, noticeably cooler.

If your car is more than 3 years old I would go on RockAuto and buy a new cap for $5. The coolant needs pressure in the system to work. These caps eventually wear out and won't allow the cooling system to pressurize - especially in high performance engines like the N63 that run really hot. Also, change the coolant! It doesn't last forever.

Looks like you're recommending I replace this part
https://www.rockauto.com/en/catalog/...+tank+cap,2067

This is just a screw off screw on repair I take it?

What coolant additive do you recommend and why?
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  #9  
Old 09-26-2018, 09:21 AM
den550 den550 is offline
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Originally Posted by Flatland328 View Post

Make sure that you aren't looking at the oil temperature gauge.......

I'm looking at the digital readout of engine coolant in the "secret menu" on the dash display
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  #10  
Old 09-26-2018, 09:52 AM
Jacob Castle Jacob Castle is offline
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Quote:
Originally Posted by den550 View Post
Looks like you're recommending I replace this part
https://www.rockauto.com/en/catalog/...+tank+cap,2067

This is just a screw off screw on repair I take it?

What coolant additive do you recommend and why?
I hesitate to make a recommendation on the coolant additive, but they are out there - Redline makes one, Royal purple makes one, there are others. There is some debate on if they make a difference or not - personally I think they can help a properly functioning cooling system, but aren't going to do anything for a neglected cooling system.

As for the cap, that's it (my car being a 2011 uses the flat style cap). They do just screw on and off - this should only be done when the car is cold, ie has been sitting OFF for many, many hours - if you aren't sure do it after the car has sat overnight. I doubt you will ever see this in any BMW maintenance schedule, but typically these caps lose their ability to pressurize over time. Coolant must have the correct PSI to cool correctly.

Last edited by Jacob Castle; 09-26-2018 at 09:55 AM.
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  #11  
Old 09-26-2018, 10:38 AM
tacos3 tacos3 is offline
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Quote:
Originally Posted by den550 View Post
I'm looking at the digital readout of engine coolant in the "secret menu" on the dash display
What secret menu are you referring to? I use Carly and Bimmercode and either has an accurate coolant temperature display.

Bimmercode has nothing
Carly shows coolant temp @ ~420 F which is wrong.

thanks,

Darren
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  #12  
Old 09-26-2018, 10:43 AM
Jacob Castle Jacob Castle is offline
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He is looking at Main Menu> System Test > Temperature menu on the secret cluster menu.


Last edited by Jacob Castle; 09-27-2018 at 05:42 AM.
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  #13  
Old 09-27-2018, 09:04 AM
550iFreak 550iFreak is offline
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Mein Auto: 2011 F10 550i 6MT
My car is running at around 96-98c most of the time. Hottest I got was 101c at 95 degree farenheit ambient and AC on. I was waiting for my fiance to get out work which resulted with 15mins idling.

Granted, I did the 90c degree thermostat mod. My oil never hit past 230F no matter how hard or how hot I ran it.

She loves it

But yes, normal factory temp is 105 to upwards of 110c, oil temps steady at the middle of 250 degrees farenheit. I dont allow it in my book though since I'm keeping the car for a long time.
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