Connecting a good set of gauges to the system [ one on the HP side, one on the LP side] will show if the system is up to pressure. A refrigerant leak is usually accompanied by an oily residue , a visual check is the first step. After fixing the leak,before re-gassing, a vacuum pump should evacuate the system for at least an hour, to clear any moisture. The ability to hold vacuum normally indicates no leaks. Each system holds a definite weight of refrigerant, too much gas is as bad as too little. If your mechanic simply attached the gas bottle to the system & gave it a squirt, without going thru the correct procedure, find another mechanic. Bob
I’m pretty sure the dinosaurs died out when they stopped gathering food and started having meetings to discuss gathering food
A bookshop is one of the only pieces of evidence we have that people are still thinking
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