gotta get this thing online this weekend... anyone know for sure if York "s" is the replacement for York "g" oil? shop claims it is, but i thought i'd ask the field. machine is a YSDCDBS3, R-22. the smaller machines use "c" oil. S3 and larger use "g" according to the literature i have onsite. also if i jump out the oil float on this thing, are there any other safeties that will knock me down if i don't get my oil back? thanks!