Neither one. Just give the gears a quick squirt of 90 weight and spin them a little before putting the top on and installing the trans, then fill it to the level of the bottom of the plug partway up the side of the case. There are no clutches or other parts that require an assembly lube. If you're not using caged needle bearings for the cluster gear, use heavy chassis grease to hold the needles in place so they don't collapse when you slide the pivot shaft into place. It will dissolve into the gear lube within the first few minutes of operation.
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!