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Old 12-09-2019, 07:35 AM
ArgentoCarNut ArgentoCarNut is online now
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2011 35i - Adding Coolant - Any science here?

Folks, yesterday I replaced the two gaskets on the oil cooler and oil filter housing. Happy to report that I was able to get to this relatively easy by loosening the intake manifold but not taking it completely out... huge time saver.

The Oil Cooler gasket I had replaced less than 1 year ago. I was suspicious about this leaking again, but found that the issue probably was related to over-torquing the bolts. They only take 16 lbs/ft.

Anyway, there is a significant coolant loss associated with this job. I think in all almost 1 full liter came out that I did not put back in since the catch bottle I used was contaminated.

When I ran the car the coolant level light came on. I plan on stopping by the dealer to get 1 liter (for $11.75 ) concentrate, and was wondering if there's any special procedure to add back into the circuit. How do I know if I need to bleed the circuit?

Cheers!
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Old 12-09-2019, 08:24 AM
paramedic1079 paramedic1079 is offline
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Quote:
Originally Posted by ArgentoCarNut View Post
Folks, yesterday I replaced the two gaskets on the oil cooler and oil filter housing. Happy to report that I was able to get to this relatively easy by loosening the intake manifold but not taking it completely out... huge time saver.

The Oil Cooler gasket I had replaced less than 1 year ago. I was suspicious about this leaking again, but found that the issue probably was related to over-torquing the bolts. They only take 16 lbs/ft.

Anyway, there is a significant coolant loss associated with this job. I think in all almost 1 full liter came out that I did not put back in since the catch bottle I used was contaminated.

When I ran the car the coolant level light came on. I plan on stopping by the dealer to get 1 liter (for $11.75 ) concentrate, and was wondering if there's any special procedure to add back into the circuit. How do I know if I need to bleed the circuit?

Cheers!
Use a 50/50 mix coolant and distilled water. Add the mix to the expansion tank until you are at the max level line for the float inside the expansion tank (it's yellow). Afterwards, run the waterpump bleed procedure by turning your car on to the auxiliary position (don't crank it so just hit the start/stop button), turn the heat to high (84F), fan setting to low (1 bar), and hold the gas pedal down for 10-15 seconds. The waterpump will then run through a bleeding cycle for 10-12 minutes. After it is complete, open the expansion tank back up and see where you level is. Top up if needed but there is no need to run the bleeding procedure again.
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Old 12-09-2019, 09:18 AM
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Doug Huffman Doug Huffman is offline
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Ensure proper compatible coolant anti-corrosion package.
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Old 12-09-2019, 10:38 AM
ArgentoCarNut ArgentoCarNut is online now
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Quote:
Originally Posted by paramedic1079 View Post
Use a 50/50 mix coolant and distilled water. Add the mix to the expansion tank until you are at the max level line for the float inside the expansion tank (it's yellow). Afterwards, run the waterpump bleed procedure by turning your car on to the auxiliary position (don't crank it so just hit the start/stop button), turn the heat to high (84F), fan setting to low (1 bar), and hold the gas pedal down for 10-15 seconds. The waterpump will then run through a bleeding cycle for 10-12 minutes. After it is complete, open the expansion tank back up and see where you level is. Top up if needed but there is no need to run the bleeding procedure again.
Crystal Clear - Thank you!

Quote:
Originally Posted by Doug Huffman View Post
Ensure proper compatible coolant anti-corrosion package.
Do you mean anything other than 50/50 mix of the OEM coolant sold by BMW? Can you elaborate?
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Old 12-09-2019, 10:57 AM
jason0 jason0 is offline
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Quote:
Originally Posted by paramedic1079 View Post
Use a 50/50 mix coolant and distilled water. Add the mix to the expansion tank until you are at the max level line for the float inside the expansion tank (it's yellow). Afterwards, run the waterpump bleed procedure by turning your car on to the auxiliary position (don't crank it so just hit the start/stop button), turn the heat to high (84F), fan setting to low (1 bar), and hold the gas pedal down for 10-15 seconds. The waterpump will then run through a bleeding cycle for 10-12 minutes. After it is complete, open the expansion tank back up and see where you level is. Top up if needed but there is no need to run the bleeding procedure again.
IIRC, you need to turn the ignition ON, not just Acc on. So two presses of the button w/o foot on brake pedal ?

Make sure to do this with a healthy battery.
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Old 12-09-2019, 03:31 PM
FredoinSF FredoinSF is offline
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BMW coolant mixed 50:50 with distilled water. Can't go wrong.
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Old 12-09-2019, 07:45 PM
paramedic1079 paramedic1079 is offline
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Originally Posted by jason0 View Post
IIRC, you need to turn the ignition ON, not just Acc on. So two presses of the button w/o foot on brake pedal ?

Make sure to do this with a healthy battery.
Correct. Sorry for any confusion.
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Old 12-09-2019, 07:46 PM
paramedic1079 paramedic1079 is offline
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Quote:
Originally Posted by ArgentoCarNut View Post
Crystal Clear - Thank you!



Do you mean anything other than 50/50 mix of the OEM coolant sold by BMW? Can you elaborate?
I've used Pentosin NF mixed with distilled water in several of my cars without any problems. I'm pretty sure Pentosin NF is the same fluid BMW uses with their logo on it.
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Old 12-09-2019, 09:15 PM
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All supposes that the car is currently filled with OE bmw fluid....
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Alignment here: The Definitive Alignment Thread

OE is Original Equipment aka 'BMW Original Parts' aka 'What you buy at the BMW dealer with a BMW label'

OEM is Original Equipment Manufacturer... EITHER the company that made the OE part or.... A part this is identical to the OE part, but is sold by the OEM under their own label


OEM is not what BMW sells


http://www.bimmerzone.com/category/T...ricks_OEM.html

https://www.turnermotorsport.com/t-OEvsOEM
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Old 12-09-2019, 09:58 PM
paramedic1079 paramedic1079 is offline
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Originally Posted by ard View Post
All supposes that the car is currently filled with OE bmw fluid....
I know you are big on your OE fluids...I'm still waiting for my transmission to blow up like you said it would because I used Liqui-Moly instead of ZF when I drained and filled it.
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Old 12-09-2019, 11:26 PM
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Quote:
Originally Posted by paramedic1079 View Post
I know you are big on your OE fluids...I'm still waiting for my transmission to blow up like you said it would because I used Liqui-Moly instead of ZF when I drained and filled it.



Just that all the advice and nodding here about recommendations assumes he has BMW OE fluid already.

If he has a differnt fill currently, then there might be different advice.



I couldnt care less about what you put in your car. I see you've decided to make it your mission to snipe at me. Enjoy.
__________________
Alignment here: The Definitive Alignment Thread

OE is Original Equipment aka 'BMW Original Parts' aka 'What you buy at the BMW dealer with a BMW label'

OEM is Original Equipment Manufacturer... EITHER the company that made the OE part or.... A part this is identical to the OE part, but is sold by the OEM under their own label


OEM is not what BMW sells


http://www.bimmerzone.com/category/T...ricks_OEM.html

https://www.turnermotorsport.com/t-OEvsOEM
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  #12  
Old 12-10-2019, 04:34 AM
ArgentoCarNut ArgentoCarNut is online now
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2011 35i - Adding Coolant - Any science here?

Quote:
Originally Posted by ard View Post
All supposes that the car is currently filled with OE bmw fluid....


It is. Unless the dealer did not use OE fluid - and as much as I consider them crooks, I doubt theyd go as far as using something different.


Edit: You made me go back to my records and yes, the dealership replaced the water pump and put new fluid in at the same time. Invoice specifies BMW fluid with part number.

Last edited by ArgentoCarNut; 12-10-2019 at 05:55 AM.
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Old 12-10-2019, 07:03 AM
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Doug Huffman Doug Huffman is offline
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[QUOTE=Doug Huffman;12919167]Enclosure 3 to SI 17 01 96 (140), 07/2018

Risk of damage!
BMW Coolants must not be mixed with one another arbitrarily.

The coolant may gel and that may lead to engine damage if mixed.

Following table shows the safe miscibility of the coolants from a technical point of view:

https://www.newtis.info/tisv2/a/en/e...eck/1VndAEbNUP
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Scepticism is the chastity of the intellect, and it is shameful to surrender it too soon or to the first comer: there is nobility in preserving it coolly and proudly through long youth, until at last, in the ripeness of instinct and discretion, it can be safely exchanged for fidelity and happiness.
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Last edited by Doug Huffman; 12-10-2019 at 07:06 AM.
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Old 12-11-2019, 12:51 AM
B4_685 B4_685 is offline
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Quote:
Originally Posted by ard View Post
Just that all the advice and nodding here about recommendations assumes he has BMW OE fluid already.



If he has a differnt fill currently, then there might be different advice.







I couldnt care less about what you put in your car. I see you've decided to make it your mission to snipe at me. Enjoy.


that escalated quickly hehe - sorry just chuckling to myself. Im all for hearing about non-oe fluids and the experience of others so pls keep the feedback coming. Nothing erks (spelling?) me more than paying bmw for a product that I can get for the same quality / better price at the oe manufacturers store. At the end of the day Id rather spend the extra cash on beer


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Old 12-11-2019, 06:15 PM
ard ard is offline
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Originally Posted by B4_685 View Post
that escalated quickly hehe - sorry just chuckling to myself. Im all for hearing about non-oe fluids and the experience of others so pls keep the feedback coming. Nothing erks (spelling?) me more than paying bmw for a product that I can get for the same quality / better price at the oe manufacturers store. At the end of the day Id rather spend the extra cash on beer


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whatever you do, stick w OEM beer.

__________________
Alignment here: The Definitive Alignment Thread

OE is Original Equipment aka 'BMW Original Parts' aka 'What you buy at the BMW dealer with a BMW label'

OEM is Original Equipment Manufacturer... EITHER the company that made the OE part or.... A part this is identical to the OE part, but is sold by the OEM under their own label


OEM is not what BMW sells


http://www.bimmerzone.com/category/T...ricks_OEM.html

https://www.turnermotorsport.com/t-OEvsOEM
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  #16  
Old 12-14-2019, 01:59 PM
B4_685 B4_685 is offline
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Fwiw Im using this bmw fluid in 50/50 concentration in my N63 X5 - and yeah agree on oem beers hehe


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  #17  
Old 12-16-2019, 06:27 AM
ArgentoCarNut ArgentoCarNut is online now
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Update folks, turns out the plastic coupling at the top of the return line hose from the cooler to the thermostat housing broke.

I found out due to a large puddle of wager that my wife identified. A few days after the fix (and the fact that the coolant low light came back on). Discovered it was this particular hose by coincidence, since all indicators pointed toward the thermostat.

It was in stock at the local dealer for $87 (ouch) and the parts guy told me he sees several of these replaced regularly.

I had to stop halfway thru the process after I ran out of time. Next up will be full flush/replace of coolant.


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