R134a with Stop Leak

Joined
Sep 13, 2003
Messages
5,928
Location
Waterloo, ON
I have a 99 Grand AM that leaks 12 oz of 134a every 6 months. I was thinking of putting in the 134a with stop leak. Has anyone used this stuff? Any reason not to put in in?
 
Joined
Jul 10, 2009
Messages
505
Location
Winston-Salem, NC
There is no reason not to try it. But check the system carefully for oil leaks as you might kill the compressor. I would use some 134 with leak stop and a dye marker to make it easier to spot you leaks.
 
Joined
Sep 11, 2004
Messages
2,441
Location
snowblind in TX
Not good to put that stop leak garbage in your system. Plays [censored] with orifice tubes and valves. Either fix it right, or spend the $15/yr in R134 cost.
 
Joined
Jun 5, 2003
Messages
23,160
Location
Apple Valley, California
 Originally Posted By: punisher
Not good to put that stop leak garbage in your system. Plays [censored] with orifice tubes and valves. Either fix it right, or spend the $15/yr in R134 cost.
X2 It will harden in your system and completly ruin it.
 
Joined
Jan 15, 2006
Messages
17
Location
Pennsylvania
I've had much better experience. I used stop leak successfully on my somewhat older Ford vehicles to seal minor leaks. It stopped the leak, and I never needed to add freon again. Had no hardening or other issues. In fact, I gave my 91 Taurus to the nephew 5+ yrs ago and his family is still driving it....and the AC works. Just want to add, the 91 used R12. I added R138 stop-leak to my 98 Windstar with the same positive results.
 
Last edited:
Joined
Sep 5, 2006
Messages
19,479
Location
Chicago Area
Consider putting in a can each year of the regular stuff. $6-10 a year. You might see oil where it is leaking out, and decide if you want to fix it and go through the evacuation and filling process. R134a with stop leak? They promise it is safe for the system, and it probably is, if you only use one can one time.
 
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