I used a retractable plate made for a late model vette. I raised the
oil cooler 2" inches & mounted the bracket in the bottom section of the
oil cooler opening.
I now flip it up & down via a key fob switch. It also acts as a sort of air blocking/damper for my
oil cooler when its cold out side. Up, it helps the oil stay a little warmer & down it drops the oil temp down about 7 to 10 degrees. Here in the North East; it works the Balls!
Plus people really get a kick out of seeing the plate go up & down. They see it as some kinda "James Bond car/gadget" thingy!
It cost about $150. at
rpidesigns.com part# C6PRLF. The site also show a little video of one in action on a vette. It works good for pesky cops too!