Ok, the oil cooler leak is back. It teeters too much. The seal can come out enough to drip. It really leaked when 1.0+ bar pressure was applied. Since the cooler is bent, I'll order a replacement. How much transmission fluid is lost during replacement? Hopefully, not enough is lost to get to a shop for filling and check. The filter and fluid have about 20k miles on them them. The transfer case oil too. I may go ahead and ask for a transfer case oil drain and fill. I'm almost sure it had OEM fluid in it when I had it drained and filled shortly after purchase.

Which brand of oil cooler work? Wow, OEM is crazy high.

A wire bypass was tried on the coolant level sensor plug. I need a thinner bypass wire to try. If the wire used did bypass it, the warning didn't go away.

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'06 X5 3.0i - bought @143,123 miles (12/26/20)