You can use those gauges with Freeze 12. However an easier way to fill your
AC is using the sight glass and no gauges assuming the Freeze 12 came with
one hose for adding it to a car. On a hot day, turn on the AC to full and
with the can upright connect it to the low side AC connection in the car.
Then open the valve on the can and watch the flow of bubbles through the
sight glass. Once the bubbles are almost gone and the flow is mostly liquid,
Can I use this with my 1982 W123? my A/C is not as powerful as it used to.
I have a case of Freeze12, oil and dye.