I just learned something about air conditioning systems that I did not know, thought I should pass it along.
While having a new AC hose made for one of my trucks, the AC shop hose guy ask me if I wanted the "new hose material"... I ask what that was and he then explained to me that older systems used hoses that were gas permeable and that feature equated to most of the leak down of freon over time in older cars. Seems the thought of the day was "freon is cheap, this hose is good enough, and it's cheap, let's use it" at the car design. In the "old days" freon was cheap.. I remember buying cans off the shelf for [summer sale time] $3.00. So if it leaked,, just add more, big deal. Times have changed. The new hose material costs about $3 a foot more than the "old stuff" design.. I now have the new stuff. Could it be the cause of your leak down over time issues on the older Mercedes? Grant... Food for thought... On Thu, May 9, 2013 at 11:31 AM, Tim Crone <bb...@crone.us> wrote: > On Thu, May 9, 2013 at 12:34 PM, Rich Thomas < > richthomas79td...@constructivity.net> wrote: > > > Yes I have the Freeze 12 and that is what I meant by "some other stuff" > > whose name I could not remember. I was thinking to give that a try but > > wanted to get opinions. > > > > I think you should have enough to do the whole system fresh with Freeze 12. > You can (supposedly, not according to the EPA though) mix it with R12 if > you're okay with doing refills on leak down, but make sure you mark that > it's not R12 so it doesn't accidentally get evacuated into an R12 cylinder. > The "correct" way is to vacuum, repair, and fill. > > > > I should get some conversion taps to use the vac pump, see if it holds a > > vac for awhile. Then maybe dump in some sealer and see what happens. I > > also have some 134 leak detector (not sure if it has 134 in it or not, > will > > have to see) I could try if it won't react with the R12 oil in there. > > > > Would there be a "kit" of appropriate seals and o-rings and whatever that > > would cover the various connections, or is it one of those things where > you > > have to go searching? > > > When I bought it, the generic conversion kit at WalMart contained a baggie > of all the seals and o-rings that were commonly in use, and you were > supposed to go through the whole system and change them before filling with > 134. > > Sounds like you should get Max to help with leak detection. :) > > Best, > -Tim > not yet a Chapel Hillion > _______________________________________ > http://www.okiebenz.com > For new and used parts go to www.okiebenz.com > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
