Doctors ,Mechanics and AC Tall Tales

[Carrameow]

Dealer told me not to buy the AC R 134 retrofit Orings or valves or Compressor when i went to pick them up today. Said Shop Mechanics told him not to bother because R134 will blow up '83 AC System/ other mechanic standing there said he just basically stuffed the R134 in without a retrofit and 6 hours later, the system suddenly kicked in and nearly froze him. Another guy said just pull a vacuum, blow the Freon 12system out, thats all he does. Mechanics are very intelligent, Mercedes pros in a class next to Doctors. but the next time I get surgery I am going to get 12 opinions.