yea the B&M shifter in my dragster ain't been cleaned nor relubed either, that too must have been built "to work in crappy, dirty environments"
Frankly, IMO, this thread is ridiculous! If a little crud on your shifter mechanism causes you to lose sleep then wipe it off and go race. Further, if you feel a relube is necessary too, chose your favorite lube, grease, oil and just dab it for christ sake. If you must be told what lube to use, IMO you don't belong behind the wheel of a race car but you could call the manufacturer and ask!