Normally, the supercharger will take (2) 4 oz bottles of GM synthetic supercharger oil. That stuff is expensive. So, yes, it will take both bottles. And yes, it does stink.
Another member here, (Danthurs) has converted to using Mobile 1 5w-30(i think) synthetic oil. He uses it in the engine and supercharger. GM has issued a letter saying its ok to use this oil.
So, here'* what you can do, and Dan does it also. Buy the big 5+ quart jug of Mobile 1 synthetic 5w-30 and filter. Do your oil change like normal, and with the remainder half quart or so of new oil, use that in the supercharger. See what I mean?
1997 Pontiac Bonneville SEi-SCRAPYARD
2000 Chevrolet Blazer LT 4X4 4.3L
2002 Chevrolet *-10 LS Ext Cab 4X4 5.7 V8