<VV> A/C For 69 Corvair

jimster1 jimster1 at earthlink.net
Tue Jul 13 16:35:32 EDT 2010

Yup, it's good stuff.  It doesn't turn into a poisonous gas when exposed to
elevated temps like R134.  Its downside is it's cheap and DuPont can't
patent it and charge exorbitant prices for it.

-----Original Message-----
From: virtualvairs-bounces at corvair.org
[mailto:virtualvairs-bounces at corvair.org] On Behalf Of Bill H.
Sent: Tuesday, July 13, 2010 12:59 PM
To: BobHelt at aol.com; virtualvairs at corvair.org
Subject: Re: <VV> A/C For 69 Corvair


Bob:  I don't think this is a problem.  The ES12a (hydrocarbon gas) has a
ignition temp than both R12 or R134a, and is non-toxic.  Also, it requires
pressure on the A/C components and less horsepower from the engine to run

As I said, I ran it without problems in my other car, and I like the idea
it's non-corrosive when contacting moisture...Bill

From: "BobHelt at aol.com" <BobHelt at aol.com>
To: gojoe283 at yahoo.com; virtualvairs at corvair.org
Sent: Tue, July 13, 2010 3:08:01 PM
Subject: Re: <VV> A/C For 69 Corvair

In a message dated 7/13/2010 10:23:01 A.M. US Mountain Standard Time, 
gojoe283 at yahoo.com writes:
The ES12a is non-corrosive if it contacts moisture, therefore no 
>pull-down or vacuuming of the system is needed before charging.  It's legal
Isn't Envorosafe propane based? 

And wouldn't that be highly dangerous to use around spark ignition engines?

And wouldn't it be unsafe to use in Corvairs?

Bob Helt

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