Is there any one experienced in oil evacuation from gear boxes, gravity method with diaphram pump are not the best meathods for sure.

Vacuum can be used , but need help also how would you clean the sump - sludge etc before fresh charge - contribution requested.

Hi I have done the double pump system and then wash the inside with a cleaner using air venturi system this works best

Dear Robert

what liquid are you using ! can you share the technical working of the same or you are marketing the same - if so what is the price.