has anyone heard of changing out the oil in the supercharger on a 99 grand prix gtp? i have heard that its wise to, but i havent heard anything since then, any advice will be appriciated.

the Oil in your supercharger should be changed every 30k miles, using GM supercharger oil, best way to get it out of there is with a turkey baster, and when you go to fill it up the reccomended amount is 6 oz of fluid which is a bottle and a half.

thanks for the advice, i just got the car not to long ago and i am not sure if it has ever been changed. i will get that done asap then!! once again, thanks

yeah when you take the plug out give the fluid a whiff, if it smells horrible then it needs to be replaced.

If you want to make it cheaper on you buy it zzperformance.com there bottle is 6 oz and 9.95 as to 2 bottles of GM which are 4 oz a peice which you pay 7 a peice for, just a thought!

ok, now i have another related question, where is the plug for the supercharger? is it up on top of it somewhere? i wanna check it out, but i am not sure to where it is at exactly! thanks again.

http://thepontiacgtppage.com/images/M90/oil%20plug.jpg

I get half boost y is that