04-25-2018,
I just add one of these (it contains 1 oz of oil) when I fill my system up after it has been apart ...
[attachment=3854]
Although the sticker on the truck says I should use 4 of these, I only use 3 of these ...
[attachment=3855]
--- I DO NOT USE ANY KIND OF PRODUCT WITH STOP LEAK IN IT!!! -- The A/C system on a prostar hates those products!. - Or at least that is my own experience with it anyhow.
I also pull a full vacuum on the system before putting the first can in. I usually put one can of r134 (puts the system at 50 psi and compressor will run on its own, then the can of oil, then the rest of the 134.
[attachment=3854]
Although the sticker on the truck says I should use 4 of these, I only use 3 of these ...
[attachment=3855]
--- I DO NOT USE ANY KIND OF PRODUCT WITH STOP LEAK IN IT!!! -- The A/C system on a prostar hates those products!. - Or at least that is my own experience with it anyhow.
I also pull a full vacuum on the system before putting the first can in. I usually put one can of r134 (puts the system at 50 psi and compressor will run on its own, then the can of oil, then the rest of the 134.