OK, so I went to add some R134 to my 83' 300d as I've done in the past. Well, when I went to disconnect, the valve (low side) seems to be stuck open. I'm getting a lot of oil and a bit of air coming out. I tried reconnecting/disconnecting it but it seems to be stuck open. I ended up just putting the cap on the valve and apparently it's holding to a degree since the AC was somewhat useful today. So, my questions are, is that thing a shrader valve? Either way can it be easily be replaced or otherwise likely fixed?
Also, should I be seeing a lot of oil, or is that a sign that there's too much in there? Thanks! Levi
