Last year when I drove my car to Houston for the show, I used about 2 cans of 134 for the round trip. When I returned, I had the car inspected for leaks. This summer, I have replaced all of the o-rings for the system and replaced the condenser and accumulator. This was performed just before the show in Memphis. During that entire trip, I had no change in cooling abilities. The car was colder that it has ever been during my ownership. I will keep an eye on this as I don't drive the car much and maybe in a couple of months see if I am experiencing the same losses (through the hose) that you are. Sean Howley VIN#2345