I just read the article that Dave provided. One question that I have is what size are the o-rings that you replaced. A parts list would be great. Thanks for the good information. Scott Mueller 002981 RNDOLA -----Original Message----- From: Dave Swingle <swingle@xxxx> [mailto:swingle@xxxx] Sent: Sunday, February 16, 2003 2:07 PM To: dmcnews@xxxxxxxxxxxxxxx Subject: [DML] Re: R-12 to R134A swap Funny you should ask.... Dave Stragand just did a nice tech writeup on this. http://www.dmcnews.com/Techsection/R134.html