i like the oil cooler idea as well, when i took tw into pisgah natl forest...some of the trails were in pretty rough shape, some were just blocked with downed trees.
it was hot in there with very little air moving. running the tw around downed trees, thru the woods and weeds and mud...i heard the engine ping quite a few times...it was runnin hot, and could have put an oil cooler to good use..
i am definetely interested in an oil cooler..