I am on my second TC33DA. I so;d the original because at 65 hours the dealer was unable to resolve Hydro-stat filter from blowing out the oil and hose by radiator would swell to about 4 times it size. I have been having the same problem on my new one with about 25 hours on it. I attempted NH 800 cust phone number help with no luck. I attempted to reach out to Mr. Bill Fitzgibbons at New Holland and he said to take it back to dealer. First tractor has been worked on about 10 times and my new one 3 times. Do anyone have a phone number for someone at New Holland who you can talk to in person. I have no problem going to back to dealer, however I feel it is something NH is having problems and needs to step in and repair. Thanks