Hi, What if I want to up grade to R134a? How does one flush out the old lubricant (since the lube for R-12 and R-134a is different and incompatible)? I recently pulled a radiator/condser assembly out of a Vanagon and was surprised at how much lubricant was "up front." I'm going to be interfacing the Vanagon's A/C system to my new Subaru engine/R-134a compressor. Kennedy (who is a nice guy, I drove up to his shop to meet him last week) never connected the two systems together as he couldn't find a local shop that could make up the hoses needed. He's up in the high desert where there is just not the same available resources as there is in the Orange/Los Angeles basin. I'm just getting to this part of the project. Also, in reading up on A/C systems, Vintage Air, of Texas, says that the Hoses used for R-134a systems has an extra barrier as the gas will permeate through hose used for R-12. The VW service bulletin on R-134a upgrade doesn't address this issue, is that because the cost would be prohibitive? Or is this it a non-issue with the Aero-quip hoses that were used on the Vanagons? If the gas does seep through the hoses, how often should one expect to have to check/add gas? Has anyone worked through any of these issues? I've read many times of Ken's recommendation of using Freeze 12 and if I was going to use a R-12 compressor I would explore that route. Since, I have a R-134a compressor I would rather stick with the R134a. Thoughts anyone? Cheers, Kevin Dawson 87" Wolfie 1/2 Camper |
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