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Old 07-20-2003, 01:02 PM
Posts: n/a
It is a VERY BAD idea to use the same gauges on both systems. You will cross contaminate both system types, not a good thing.

The good news is that a set of gauges for R12, R22 and R502 are very cheap. As low as about $30.

Have a set for 134 and a set for R12 and never mix the two.

Good luck,
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