Thanks to all ! I've found an interesting page about "retrofit": http://www.id-usa.com/faq2.htm It's a commercial page but ther's some "FAQ" about charge, oil etc.. Also: http://www.epa.gov/docs/ozone/title6/609/oneshop.html According to these pages and to your answers the R134 charge must be between 80 and 90 % of the R12 charge. So 2 1/2 to 2 3/4 pounds for '57-58 cars. And i'll watch at the sight glass (i've one ...) -- Philippe COURANT (Pau, France)- Webmaster des sites ACCF et C-I-F Imperial 1957 Crown convertible Buick 1996 Roadmaster wagon - American Car Club de France (ACCF) : http://www.accf.com - Chrysler Imperial France (C-I-F) : http://www.ifrance.com/c-i-f - Cadillac " Standard of Excellence " : http://www.ifrance.com/accf-cad - SportsCars : http://www.ifrance.com/accf-sprtcar -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 2003 Calendar voting results and ordering information is online! Please visit: http://www.forwardlook.net/calendar2003 for more information.
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