No one here (that I am aware of) is going to tell you to put in leak stop of any sort. The proper thing to do is find the leak, repair it, then recharge it. Because you are using 12A (basically propane), I'm going to assume you are in Canada or somewhere else where you cannot purchase 134a without ...

is it 45 degrees where you are at? Static pressure (engine off) should be nearly the same as ambient temp - so this tells me you are incredibly short, or shy on refrigerant- like maybe only a few ounces have been sucked in...Running in a vacuum also confirms this. A typical a/c system will hold 2 o...

I have a 1995 Flair motorhome (Chevy chassis). My a/c hasn't been working for years (and has been left 'off'), but we're headed to a hot spot so I thought I'd get it operating again. I used a Red Tek kit, adding one can of refrigerant and one can of Red Tek oil treatment. With the engine off, I have...