I honestly don't have a lot of answers to these as the shop has been doing all the work as warranty work. They replaced a compressor last year, and a few months later this hose broke and they replaced it, then again, then replaced it and the compressor, and now it's blown again. I'm just trying to figure it out so I can stop taking the car to the shop. It blows when the truck starts as that's generally when the compressor runs. It's the land rover supplied hose for the compressor (according to the shop). Its not even my daily driver, so its not even used constantly.