Understood. However, I was not aware that it was intended to be used as a “top off” for an R12 system. I interpret that statement as saying that any remnants of R12 or R134a won’t react or affect the alternative refrigerant.
Here's the thing...when you mix two (or more) refrigerants you concoct a new, 3rd blend. The proportions of this blend will vary according to how much of each parent refrigerant you put in. You may do a top off one time where you have 75% of refrigerant A and 25% refrigerant B, next time it may have 49% of A and 51% of B. The resulting blends will have different thermodynamic properties. Bottom line - it's a crap shoot every time. You have no way of knowing if your new blend will cool, how it will affect capacity, what kind of oil micsibility it will have, etc., etc. And you now have a substance inside the system that should be incinerated when it comes time to recover it. Any way you cut it, it's bad refrigerant practice. Sorry if I sound harsh, but mixing refrigerants is the work of hacks. And frankly, you're cheating yourself and the environment when you don't recover and convert through proper procedure. -D > On May 25, 2017, at 7:58 PM, MG via Mercedes <mercedes@okiebenz.com> wrote: > > They say on their site that it will mix with either R-12 or 134. > > Dan Penoff via Mercedes wrote: >> You can mix R12 and “alternative” refrigerants? >> News to me - I thought the alternative stuff was just OK to use as a >> complete replacement? I wasn’t aware you could mix it with Freon. >> -D _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com