I burst the hydraulic hose that ran the fans and power steering. We were climbing the hill out of Indio at the time in 120 degree weather on a Saturday. DW drove back to Indio and contacted a mobile repair guy. He drove the 10 miles up the hill, took the old hose off, returned to Indio and had a new one made and came back and installed it. Charged my $200...I gave him $300 and told him to have a nice day. I would replace all four so you don't get stuck on the road somewhere....rubber doesn't last forever..call a mobile guy....Dennis