Hi 420 Benz,

Can't remember how much dye was used but the a/c efficiency dropped noticably within 2 weeks at about 1000 miles and another 1000 miles the system would not turn on due to low gas level.

Don't think that injecting more dye will make the leak easier to find. When you inject dye, the vehicle to carry it into the system is oil. Too much oil is bad for the compressor.

One dose of dye will be more than enough. After exhausting all possibilities of finding dye, removing the radiator is a good measure as previously mentioned. Next would be to lower hush panels under dash and examine as much as you can.

The dye in condensation water is a TRACE. A 4" puddle is enough, but you need the glasses, a powerful black light and DARKNESS. Examine it closely.

Good luck,

The light i am using is a Spectroline[365nm]. I just got the yellow glasses and in a very dark garage i again checked a very large puddle of cond. and could not find any trace of dye. I put the car up on jacks and checked the cond. drain holes,and all sides of the compressor [nothing] Larry: what are Hush Panels and where are they? This is starting to get very frustrating.

The panels I speak of are under the dash. Remove the one on the passenger side and try to see as much as you can see under the dash.

The fact that you have now CLOSELY examined condensation and not found a trace of dye is a very good thing. Since the car is still making condensation drain water, then it is still cooling. Give the dye a little while to leak out now that you've inspected the condensation drain water. That is the only thing you can't check after the refrigerant has leaked out.

Good luck,

Thanks guys for all of your input. I will do just that Larry, and let you all know what i find.