My instructions say 85% of the original recommended R-12 charge. (e.g. 2 pounds R-12 would mean no more than 1.7 pounds R-134a) However, I have seen recommendations for 80% or 90%. Farrar Hudkins #2613 (auto) ksgrimsr wrote: > > > I serviced my R134a AC setup this weekend and it is performing well. I > used the pressure tables in the service manual to set it up. > > Obviously, the pressure tables in the workshop manual are for R12. > Does anyone have the pressuve values for optimal R134a performance? I > want to make sure my system is running as efficiently as possible. > > Knut ------------------------------------ To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnewsYahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/dmcnews/join (Yahoo! ID required) <*> To change settings via email: mailto:dmcnews-digest@xxxxxxxxxxxxxxx mailto:dmcnews-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/