Is there any current leak? If yes, then you got to fix this first.
If not, then just have a shop do it for you... unless you are handy and
familiar with AC system... Basically vacuum it out for 20 minutes or so and
use the conversiion kit as instructed.
If you want to do the right way, then it is expensive if pro did it for
you... or you change all the orings... compressor, drier orings, and
drier... expansion valve... etc... takes alot of time.
In most cases, simple conversion is just fine.
Yeah, it's probably cheaper to do the conversion to R134a in long run as
R12 is more and more expensive and more and more scarce. I saw one
advertised for $110,— per kilo. Some cars need one to three cans.
The federal law also prohibits you from flushing the R12 freon out into
the air: that means expensive machine to extract, clean, and recycle R12
before returning it back to the vehicle or storing it in the canister.
Last year I had the old car's A/C "topped-up" and expected difficulty
getting R-12. Not a word said, A/C shop simply added some R-12 to its
When I asked about R-12's cost vs. R134a I was told that R-134a costs
had zoomed - to be nearly comparable with R-12!
So before converting, I suggest you first compare the R-12 vs. R134a
cost in your area for conversion may not be justified.
Why would that be the case? With R12 not being produced anymore,
the cost is obviously a matter of supply and demand: the garages
have the supply, so they can demand whatever they want. But R134A
is the refrigerant that's currently being manufactured. Is there
some variable here that I'm not aware of?
On the subject of air conditioning, when was the switchover from
one refrigerant to the other made by the car manufacturers? Would
my '91 300D 2.5 use R12 or R134A? (The A/C still works great at
100K miles, as long as I'm not stuck in a traffic jam for prolonged
"And how about the American eagle? The eagle is a bird of prey
and hence offensive to rodents, a key Democrat constituency."
The varible you are not aware of is that R12 is still being made in other
countries and shipped into the USA using NAFTA as a legal way to do it. You
can buy all the R12 you want if you know the right people to buy it from.
I guess that explains what;s going on. I had heard that R12 pricing
has come way down from what it was a few years ago. I had mine
converted, believing it would stay scarce and high. At this point, if
I hadn't converted, I'd see what it costs to recharge with R12. Unless
it's way high, I'd stay with it. For one thing, you lose some amount
of cooling capacity when you do the conversion and in my car, it's
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