My car calls for 1.35 lbs. of r134a for a refill, what are some common methods of weighing this amount I have 12oz. cans. Thanks!

I don't have a recovery system so I guess I'll have to take the car and see if the garage will remove the refrigerant for me and then, try what you suggested. Thanks!

My car is a 2005 Pontiac Grand Am GT 3.4l engine. The charts I looked at said 45-50 low side and 175-220 with ambient temp. around 80 degrees fh. my pressures were 30 and 125. I added a 12 ounce can of r134a and the pressures stabilized at the same readings 30 and 125 just like when I started. The a...

Thanks for the confirmation!

According to a youtube I found, it said to center the needles in the zero boxes on the gauges does this sound correct? Thanks Again!

Could someone please inform me how to do this or, lead me to a link that tells? Thanks!

Sorry, Thanks for letting me know!

I ordered this set of couplers and, these gauges will the couplers work with these gauges? Thanks! :? https://www.amazon.com/Mountain-8201-Conversion-Connect-Coupler/dp/B000JFHNEC/ref=pd_bxgy_1/142-4968356-1286241?pd_rd_w=gs3to&pf_rd_p=fd3ebcd0-c1a2-44cf-aba2-bbf4810b3732&pf_rd_r=TCEBPMYVKF6...