TOM WALKER wrote to ROY WITT:

 RW>> Roger Nelson wrote to Roy Witt:

 RW> RN>> We finally found the valve to input some more freon this
 RW> RN>> afternoon and all it needed was a can.  Everything working well,
 RW> RN>> now.

 RW>> How many pounds of pressure is that one can good for? One can brings
 RW>> my Z28 up to just over the minimum.

 TW> Did you read where they were mandating another Chjenge to the
 TW> Refigerant used in Automobiles. Some one decided that the R-134a was
 TW> also polluting too much and have come up with a revised formulation,
 TW> HFO1234yf.

Yes, that was mentioned in one of the emails that I get from GM. Maybe a
year or so ago.

 TW> GM plans to start using it in soem of their 2013 Models.

They should also mention that R134 is incompatible with 1234 as R12 is
incompatible with 134...This of course means that there will be yet
another form of recharging nipples.

 TW> They thought about using CO2 for a while but it requires verty high
 TW> head pressures so it was not selected. IT does make a nice refigerant
 TW> though.

Isn't that the stuff that the environmentalists are freaking about causing
global warming? Guess they never thought about looking at the source.

 TW> teh Refigerant is expensive, about $3000 for a 20 LB tank and it
 TW> requires a totaly NEW recharge and recovery unit for the shop at
 TW> $2000 to $3000

They'll do anything to make it impossible for the independent garage to
service AC...


         R\%/itt


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