So you use the sniffer with the car off? I want to check evap drain and center vent probe. Also compressor shaft seal and manifold seal at compressor. System has a little dye in it already, I do not see any dye residue anywhere, Do I need those special glasses and special flash light?

What brand/application type dye kit does one recommend for R12 sytem with mineral oil? I have seen the autozone stuff and it says for R134A/pag oil, where to purchase?

Thanks

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1993 Mercedes Benz 300D 2.5 205K (ex wife's)
1984 Mercedes Benz 300SD 320K (SOLD)
2004 Mercedes Benz C240 75K
1995 GMC Sierra 2WD 5.7L 188K
1983 Mercedes Benz 300SD 239K (SOLD)
1987 BMW 325i 220K (SOLD FOR SALVAGE)

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