I recharged it a few times last summer. The first time, it held a charge for 2 weeks. The last time, it held a charge for 2 days. I put a red dye in the system that is visible in natural light or with a black light. With the help of a friend that's been working on AC systems for about 20 years (first in cars, now residential and commercial) I checked all the places in the engine compartment that could potentially spring a leak. We didn't have a sniffer, but this leak is so bad that my friend is confident that the dye would be visible. Once I get the center console out, will I be able to shine a light on the evaporator to see the dye?