supercharger

(98 buick regal gs)How can you check the supercharger to see if it needs to add more oil, and also how much oil goes into the supercharger some say two bottles some say 1 and a half im confussed thanx

There is an inspection plug at the snout. See pic below. Each bottle is 4 ounces so you will need two since it will take a bottle and a half if you decide to do a complete drain and resupply. Around 6 ounces. GM part number 12345982. The oil level should be at the bottom of the threads.

http://i5.photobucket.com/albums/y186/lizzywiz/m90_plug.jpg

so when i remove the bolt the oil level should be right at the last thread on the bolt or the hole of the supercharger i look in it if i shake the car i see it move but its not at the last thread of the hole im checking it cold i recently bought the car so i want to make sure its at the right level thanks

You add the oil until it fills the snout to the bottom of the threads of the hole not the bolt.