i have the amounts...and i found a chart that basically explains that i should add 2oz of oil. i was told that i should add 12-14oz of freon to fill the system. couldnt find a sticker or label so im leaning towards what i was told. the system has a total of 5.1oz of oil...just replacing 4 o-rings, a gasket, and the drier should i be only adding 2oz of oil? and should i go with the lower viscosity pag 46 or a higher pag 100? the system asks for 56.