A/C system problems again!
Thread Starter
Safety Car
Joined: Aug 2001
Posts: 3,680
Likes: 199
From: Waterford Mi
A/C system problems again!
I read about switching from R12 toR134 but have been told by repair shop not to do it. For you that have done the change, how do you get the mineral oil out of the system? Did you change anything else when you did it?
I have to replace my hoses anyway.
Thanks
I have to replace my hoses anyway.
Thanks
Race Director
Joined: Sep 1999
Posts: 11,358
Likes: 379
From: Plano TX
Re: A/C system problems again! (redwingvette)
You don't really have to drain the mineral oil. I converted my 83 Cadillac with one of the kits and it works fine. On my vette I did the whole nine yards. The compressor has a drain plug. I then flushed the evap and condenser and replaced the drier. That got all the oil out. The vette blows ice cold with R134a. 42-44F out the vents on a 90F day.
Racer
Joined: Jan 2001
Posts: 333
Likes: 0
From: Weatherford TX
Re: A/C system problems again! (redwingvette)
I put on a new drier, vacumed out the system, added oil & 134A, now I have cold air. Biggest problem most have is overcharging the system. To much and it will not cool very well.
Racer
Joined: Jul 2001
Posts: 264
Likes: 0
From: Maricopa AZ
Re: A/C system problems again! (redwingvette)
If you do not want to change anything out just use a R12 replacement like FreeZone, HotShot, or Frezz12. They will work with your exsisting oil. There are other ones out they also. I used FreeZone and it works good out here.
