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Freon

Tiny
RWARDWELL
  • MEMBER
  • 1992 GMC SAFARI
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 140,000 MILES
I have a 1992 gmc safari with r 12 system. The condenser had to be changed(a hole) but now how do I get it filled? I put 134 in it and it rattled so I had it taken out. Can you advise me seeing how I'm an older than this van ( at least no payment)?
Friday, May 20th, 2011 AT 8:38 PM

6 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
You must use R12 finding it will be a problem. Alternative is to use a drop in ecuivalent to R12. Or convert to R134 which would be expensive
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Friday, May 20th, 2011 AT 8:41 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
The big deal with retrofitting is you have to get the old oil out of the system. You can remove the compressor to empty it, replace the accumulator and flush the evaporator. The condenser can be flushed if it is the serpentine type but if it is the bypass type, it will have to be removed and dumped out. Then you just have to change the fittings, add different oil and recharge it at 80% of original charge.
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Friday, May 20th, 2011 AT 8:51 PM
Tiny
RWARDWELL
  • MEMBER
  • 3 POSTS
What kind of oil should we put in it?
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Friday, May 20th, 2011 AT 9:02 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
PAG
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Friday, May 20th, 2011 AT 9:03 PM
Tiny
RWARDWELL
  • MEMBER
  • 3 POSTS
What about "hot shot"?
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Friday, May 20th, 2011 AT 9:11 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
It's snake oil garbage and it's not approved for use in these systems.
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Friday, May 20th, 2011 AT 9:14 PM

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