why not run an inline oiler? it's $10 from sears. The filter was $10 and the fittings were $5. The reason i didn't get my fittings pressed on was i didn't want to hack up any of my stock A/C parts. It would take me around 30 minutes to go back to having A/C. Here is another forum on it.
http://mazdabscene.com/forums/viewtopic.php?t=1916&highlight=