I agree Bill...
I also want to make a note here... If the AC system has not been charged or touched in 7 years and its just now getting low..... Thats not bad at all..
Now the question is, are they sure there was a leak at the compressor? and what are they going to replace for $540?
We Put the gages on my buddies Malibu a few years back and charged the system per service manual spec... Its about 3 -4 years later and it still blows cold..
Most AC systems on cars/trucks will loose some refrigerant over time... Some more than others..
If you have the system refilled, I do recommend that someone with gages does it for you to get the system charged properly..
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