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Old 05-15-2019, 12:38 PM   #21
tech4tech
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I recently replaced my radiator with Nissens from fcp euro (~ $75) and was very pleased with the results. It fit without any issues, and came with some extra o-rings. It also came with 2 different plugs: one for automatic, one for manual transmission, so that is something you need to be careful about when you install.

Last edited by tech4tech; 05-15-2019 at 02:00 PM.
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Old 05-15-2019, 01:59 PM   #22
DOB2009
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Originally Posted by armenh7 View Post
It's manual but the nissens comes with necessary o-rings
Thanks for advice/help guys. I'm going to go with the Nissens brand radiator. I have a buddy with jack/stands available to help this weekend, so I might as well just drain the block and go with the OEM BMW coolant like I wanted to originally, then replace the drain plug/crush washer. (unless this is some hard step I should avoid). I'm not going to save much $ attempting to re-use 3 blended coolants, possibly with debris in there from never flushing / multiple coolant part blowouts.

I THINK that is all I should need now besides maybe some lubricant for the hosing to go on easier?

I'm just trying to come up with a master order list at this point and get everything purchased for the weekend.
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Old 05-15-2019, 02:07 PM   #23
DOB2009
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Originally Posted by tech4tech View Post
I recently replaced my radiator with Nissens from fcp euro (~ $75) and was very pleased with the results. It fit without any issues, and came with some extra o-rings. It also came with 2 different plugs: one for automatic, one for manual transmission, so that is something you need to be careful about when you install.
Thanks, I'm ordering from here now.
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Old 05-15-2019, 04:43 PM   #24
jmo69
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Originally Posted by LeverThis View Post
Nevermind then about the atf cooler o rings ...
The ATF cooler doesn't attach to the radiator, it attaches to the expansion tank/mount.Click image for larger version

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Old 05-16-2019, 10:58 AM   #25
DiceyOne
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Most ppl on this forum like to point fingers at the expansion tank being the weak link but I'm a firm believer that most ppl have never actually taken the time to clean their radiator fins.
A while back I took compressed air (~50psi, don't over do it or fins may become damaged) and shot it in from the front and rear of the (original) rad and it was so dusty that I had to wear a dust mask. It looked like the car was on fire.
Obviously remove the parts that are in the way like the fan and/or bumper/air scoop. I would highly recommend doing this outside and on a day with steady wind. There was dust and sand all over the place. So what that means is even if your expansion tank has failed it was probably due to the fact that the rad is no longer able to provide the heat exchange capacity that it used to and therefor all other components are working harder.
This is good practice to help your A/C system also.

To prevent dirt going all over your engine you may want to drape a sheet over the front of the block or just plan on giving the engine bay a wash afterwards. It will be very dirty I promise.
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Old 05-16-2019, 12:05 PM   #26
swordsman11868
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Or wash with medium pressure water instead of air?


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Old 05-16-2019, 03:28 PM   #27
josephmech
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I replaced my radiator with CSF all aluminum I was leaking coolant out getting light to come on
also went with mishimoto aluminum expansion tank needed to file the parts so they would fit but now no leaking
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Old 05-21-2019, 07:10 PM   #28
BMOne
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I'm experiencing the same thing as OP every few months it seems something leaks from the cooling system. I did a complete refresh 3 years ago except the radiator. Last leak was that hose sensor. This time there's another slow leak that I need to look into. Temps seem fine and usually sit at 96c but rarely I've seen them climb to 98c.
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