We just installed a new fan switch on the top of the oil cooler today that should turn the fan on at 215F rather than the crazy 245F.
Custom switch from Nason with the correct metric threads and reach,
(p/n TT-E10A-215R-QC translates to :type TT, 3/4"reach, M14x1.5, SPST NO, 215F, rising, 1/4" spade.)
About 60 bucks. Transfer the ground spade to the switch and put a spade on the other wire.
Took about an hr to install, could be less but we were doing other things.
Also a tip, replace the lower rubber cooler mounts with the annoying double studs with stud on one side only and threaded hole on the other. Then one can just remove the two lower bolts and SLIDE the bottom of the cooler back and out painlessly. Cake to remove the cooler.
Small winter project, next is a trans oil change and pads.
Rubber neoprene bumper with threaded hole.
Switch, with 215F rather than 245F fan activation.
Ready for install