First post here after along time lurking on this great site! I recently purchased a gently used 2006 TC30. I noticed today that I had a hydraulic leak starting from one of the oil cooler lines. After some research I see that is a very common issue with these tractors. Rather than buying the replacement NH part for $18 a pop I was wondering if anyone has replaced theirs with a high pressure line (4,000+ PSI)? Seems using a higher pressure hose would solve the issue of them bursting. Maybe something like this: Hydraulax Tough Hydraulic Hose. Also, anyone know the diameter of the hose? Thanks for any help!