90 weight straight mineral oil- - - -Tractor Supply sells it as Ford tractor transmission fluid. DO NOT use synthetic lubes of any kind or weight such as 85W-140, for instance. They're too slippery, and will cause gear clashing during shifting.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!