Scott,
You seem to be the man when it comes to A/C. I have a 78 450SL that has already been converted to 134 (a?) and I need to recharge it. I have a recharge kit that I use for my other cars (it works very well!) and would like to use the kit for my MB. The problem is that the charging "nipple" for the MB is incorrect (for obvious reasons). My question is, does someone make an adaptor for conversion from "screw-in" (on MB) to "push-in" (A/C recharge kit) "nipple"?
Luigi