Common practice I've seen is to put some fluid in the converter - and to lube up the seals with a little fluid so they're not spinning against each other dry.

Should only make a mess if you fill it completely...

-Boyo


'48 Willys CJ-2A / '55.1 Chevy 3600 / '66 Austin-Healey 3000 / '04 Volvo wagon (parenthood!?)