1991 Mercedes Benz 560sel Repair Question
but when i start using the car with the AC after charging it with freon for 5days i lost the freon agin.
i still can't found the leak
You need to put a UV dye in the system, run the A/C a lot to let it circulate as much as it can and then use a UV light and safety glasses that are designed for finding leaks to locate where it is leaking from.
2 questions asked
Do as suggested and i would also use a gas sniffer if you cant see any leaks, and check the vents for refregrant as you may have a leak in the evaporator and you will not see this with the UV system.
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