I still have R-12 in my 86 T/A. It hasn't been messed with 2007. I bought a 4 oz. can of R-12 oil charge and conditioner that is supposed to condition seals and keep the AC system working longer. I bought an R12 CAN TAP TAPPER FREON REFRIGERANT RECHARGE HOSE KIT. The instructions said to add 2 oz. to AC system. What I thought was 2 oz. ended up being the whole can.......will adding 2 extra oz. cause damage? So far I feel like it's not quite blowing as cold as it was.....but that could be all in my head..lol.

 

the oil charge will not help it to cool you would actually need to get r12 freon which is not really sold to public, well at least over here where i live at. it probably low on freon. and i wouldn't over load it with oil either, it can also cause for it not to cool

 

Actually it was blowing nice and cold. I thought adding some oil and conditioner would help the longevity of the system??? Guess i should have left it alone!!! Hopefully the extra 2 oz. didn't hurt anything......still blowing cold so far...

 

I don't think 2 ounces of oil will have a detrimental effect on your system. You should be fine.

 

your right it isn't sold to the public. i would get a a/c conversion kit for the parts store for the r-134. you could look online to see how much r-134 it would take. It won't take the same amount but with the amount it calls for it will still do the same thing

 

follow this link and this will tell you how much r-134a to put in vs. r-12

http://www.vintageair.com/DownloadsS...ng%20Guide.pdf

 

I think I'll just stick with the r-12 for now. As long as everything is ok with the AC system. Blows pretty damn cold...lol.