As promised, drove DeLo to work today. Took temperature readings at lunch (hottest part of the day). Inside passenger compartment: 106.something. Coldest reading from panel vents: 43.something (spent most of the trip in 45's). David T is right about one thing: R134 needs higher PSI than R12. With three cans (11 oz) in system have pressure drop at WOT bad enough to trip low pressure switch. Noted it in driveway, but never dropped below 30 PSI. Too bad I can't measure under load. Will throw another can in tonight. Should put me in low 40's. Slightly related topic: windshield lets in a LOT of sun. Am terrified of effect on dash, so I bought a dash mat to protect when driving during day (at night roll up and stash behind seat). Noted today mat is much cooler to touch than bare vinyl. Wonder if it will help overall passenger compartment temp? Am making emergency trip to DC this weekend -- 7 hours on I-95 -- will report afterwards. Bill Robertson #5939