When I loaded the tractor on the trailer I heard a bubbling sound coming from the back of the tractor,what I saw was the breather was spitting out hydraulic oil all over. I stopped by the dealer and asked them about it, they said that it was getting vapor locked and I need to put in another air vent. They can do this for around 85 bucks or is this something I can do myself. Thanks for all advice you can give me