On Wed, 14 May 2003, Samuel Scott wrote:

> Freeze 12, I believe, is a butane-based product and is a bit risky to use.

Well, define risky.  It's flammable.  Should you have an engine fire,
there's a chance Freeze 12 might help fuel it briefly.  On the other hand,
R134a breaks down into *very* toxic components when heated, so I question
whether it's really any safer.

> If you ever decide to have your A/C serviced or are selling your van, it's
> important to let them know there's Freeze 12 in the system.

This is true.  Not so much because of the flammability as because it'll
contaminate an R12 recovery machine.

David Brodbeck, N8SRE
'82 Diesel Westfalia
'94 Honda Civic Si