Black Spots under sled and underside of Chaincase guard full of it . Exhaust has been shooting back oil on starts not sure if coming from that even if the machine hasnt been running its been dripping down under the guard for the chain case . Significant amount of oil has been spraying out the exhaust to the point it covers the underside of the same area and flicks back on to the rails. Could it be pooling up under the chaincase and dripping out from inside the tunnel? Oil is black have pretty much ruled out the chaincase cover and bearings on the driveshaft are fine along with seals isnt coming from that. Y pipe does leak some into the belly pan as well. Could that be running back and pooling up in that area under the chaincase?. Oil tank is well and full when i got the sled from the previous owner it was full right up to the cover too. Not that experienced with sleds here yet. Also drain plug is seized into the chaincase. Had to split the case took the cover off of it completely to rule out it wasnt coming from that though where the leak is coming from up under lead me to think it was but it was not. All was fine witth the chain case and drive and jackshaft bearings are not the culprit. Direction of the exhaust outlet points back right to where the sled is leaking and underside of guard is full on the outside up under. Could exhaust spraying back cause it to pool up there inside and drip down even when the machine hasnt been started in awhile?