John,
  I think that I read somewhere that methyl alcohol can be used.  That is
what I would use simply because I happen to have some left from a previous
lifetime.  It was once called "ditto fluid".
  If NAPA has a link to the MSDS safety sheet for its product, you might be
able to find out what is in it.

Larry A.

On Wed, Aug 24, 2016 at 3:16 PM, John Rodgers <jrodgers113@gmail.com> wrote:

> Getting ready to flush an AC system and put on a new receiver/dryer, and
> wondering about the recommended  flush agents. Some say NAPA AC System
> flush fluid - which is  pretty pricey, and some say truck(semi's) brake
> system flush. What say you, the LIst Membership?
>
> And does anyone have a link to TerryK's website?
>
> Thanks,
>
> John
>