More MSWord Logfile notes after replacing the leaking Transmission Cooler:
05APR2014 – The Transmission Cooler is leaking Transmission Fluid near where it connects to the Transmission Cooler Lines. It must have been damaged when the front bumper straddled a Cement Parking Block last summer. I ordered a new Transmission Cooler (BMW P/N: 17-20-1-728-770) from
www.bimmerparts.com for $170.27 including shipping. I’ll keep the old one and get it repaired for a spare in case the new one is ever damaged.
12APR2014 - @162,131 Miles I installed the new Transmission Cooler. I noted only one of the 4 mounting screws (one of the upper two) were holding the old Transmission Cooler in place. I found one screw wedged between the Transmission Cooler and the Radiator but the bottom two screws were missing. Fortunately this wedged screw didn’t cut a hole into either the Radiator nor the Transmission Cooler. I used the two screws to secure the top two mount holes and used a substitute screw in one of the two bottom mount holes. I left the 4th mount hole screw-less due to difficult reach between the two lines.
I did not remove the Radiator nor Hoses nor drain it but only lifted it up and back enough to provide clearance to slide out/in the Transmission Cooler from the bottom. The Transmission Cooler Lines resisted being inserted into the new Transmission Cooler Ports. I assume this is on purpose to make a tight fit? I slowly turned the threaded securing Bolt to push the lines into the Ports.
I refilled the Transmission with Redline D4-ATF. A short test drive shows the Transmission shifts smoothly and doesn’t hesitate to downshift at Stops. I’ll keep monitoring for leaks.