Vacuumed my ac system on my 300d today. The r134 was putting such a strain on my engine, my mpg were suffering. So i replaced the r134 with the propane mixture, and i have 40 degrees at the vent. I need to play with it some more, i may have it a little overcharged, but i will wait till it hits 100 again to make final adjustment. No more strain on the compressor or engine like before. Please spare me the fire hazard excuse. Im a fireman in dallas and have seen lots of car fires/houses. Never once saw a problem with pressurized gases. Just gasoline. I start ac school this semester and plan to make propane conversions my specialty. Probably have to go to europe/canada for hydrocarbon specialization classes/cert.

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airedale2 Welcome to Texas
1984 MB 300D 266,000
1993 Nissan PU 271,000
2002 Tahoe 122,000
2004 VW TDI 75,000