Quote:
Originally Posted by samiam44
Good deal- R-12 is the way to go... Just flush the system to get rid of the old oil. New o-rings, dryer and expansion valve. Have any leaky hose rebuilt.
Generally, the ceramic seals don't loose much freon. If you have leakage at the front seal- the seal is cracked.
I read the new Denso press-release last week. I think it is a year old.
M
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+1
R12 is soooooo much better than 134a. No comparison at all. Both of my W126's had R134a retrofits, and both were mediocre in our Florida heat, until I switched to Freeze12 in the first one and R12 in the second one. R12 = 20f (or more) colder vent temps than 134a. My 85 380se with properly working R12 system could make the cabin about 60 degrees inside on a 90+ degree day. It would hurt your hand if you put it front of the vents. With 134, I was lucky if it was 75 inside on a hot day.
After those experiences, I wouldn't even consider having 134 in an older car again. R12 is plentiful, it's still manufactured in China and parts of Europe and imported legally. This "we're running out of it" thing is a TOTAL myth. All you need in my state is a sales-tax license and then you can buy it wholesale by the 5-gallon cylinder "for resale purposes" (read between the lines on that one).