It is the seal from the ebrake to the transmission that has failed. I removed the filter and fitting stole a hard hydraulic fitting from a ram on our busted up one, screwed it in where the filter was, ran vinyl hose to the bumper and then into an old rad over flow tank that I just bade a bracket for. All guys who have replaced the seal (cheap) refused to ever do it again as the clutch packs are spring loaded and explode out when you undo the ebrake housing. Once I finish pulling a blown up transmission that is no longer worth fixing I will investigate how the repair is done. I’ll also take some pictures of my “fix” until then do not leave it running with the ebrake on. I loses about a half liter every two hours of hard use.