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02-11-2011, 06:49 AM
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#1 |
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Registered User
 
Join Date: May 2005
Location: Tallahassee Fl
Posts: 773
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Freon or 134?
My 84 K10 has lost it's charge. I was planning a serpintine swap anyway. I have rat holed about 60 oz of R12 back over the years. So I have enough to charge it at least once, if not twice. Which would you do:
New compressor, new hoses, reseal system, flush, vacuum, Charge with freon and hope for another 25 years or Sell Freon, New Compressor and parrallel flow condenser/ new hoses. fluch vacuum charge with 134???? I know it cools with R12, is the constant |
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02-11-2011, 08:12 AM
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#2 |
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One shot, one kill.
Join Date: Dec 2007
Location: Saratoga Springs NY
Posts: 859
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Re: Freon or 134?
J, seeing as you are planning on changing the major components anyway, I would change it over to 134. Be aware the oil is different than R12 uses and if you get a new compressor you may need close to 10 OZ's in a brand new system. The R134 oil is called PAG oil. R12 oil and PAG oil are NOT compatable, SO, your going to have to change the reciever\drier and flush out the evaporator with brake clean followed by alcohol and then blow it dry with compressed air. I would change the drier and flush the evaporator no matter which path I took. jim
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1984 K20 350M engine with 465,000 miles. Well, it's finally done!! Almost 2 years of work, but it was really worth the effort. Little stuff left to do is mount winch, wet sand & buff out and build belly pan\running boards. Body work takes lots and LOTS of beer!!!! God, Guts and Guns made America and God, Guts and Guns will preserve it! The worst thing you could do is get into my sights, but that don't matter, you'll never know it, cause you'll never hear the shot  Jim or Paladin whichever you choose.
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02-11-2011, 01:01 PM
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#3 |
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Registered User
Join Date: May 2010
Location: laurel hill Fl
Posts: 645
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Re: Freon or 134?
My system was converted a decade ago. The parts were in good shape so they just drained the r12 out installed an adapter and put r134 in. I haven't seen a problem with the oils coming in contact. It blows cold just not as cold as the r12. I was told a larger condensor fixes this. go with the 134.
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1985 C10 Custom Deluxe LWB 305/700r4 [ Goldfinger ] 1999 k3500 crew cab dually 6.5tdi/4l80e |
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02-11-2011, 09:25 PM
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#4 |
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Registered User
Join Date: Sep 2010
Location: los angeles
Posts: 1,130
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Re: Freon or 134?
I'd see if the leak was easy to find, fix it, and then just recharge it with my r-12 until it drained again in 25 years
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02-11-2011, 09:38 PM
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#5 |
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DND Trucks
Join Date: Dec 1999
Location: NW Indiana
Posts: 2,376
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Re: Freon or 134?
I agree with all of the above statements. However, I like to use what I already have and I believe you can still get the R-12 oil, if needed, then finish off your supply. R-134 will never get as cold as R-12.
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02-12-2011, 12:49 AM
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#6 |
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F’B’D guy
Join Date: Feb 2004
Location: Texas/Maine
Posts: 2,216
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Re: Freon or 134?
I'd use the 12, I have about 40 cans of 12.....left over from my old business.
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