I did check Will'* info under techinfo, thanks for the procedure Will !

Went to dealership today unprepared to get oil and didnt know how much to get. Figureing that be OK they will know. Also figured they'd have in on the shelf :? Yaright !!!! Anyhow he goes through the book both under maintence and capacities and it says nothing about how much. It also says nothing about actually changing it under maintenence. Just to check level :? It also said right in the GM service book that you could use 5-30 syn.

Questions
1. If I get the GM # just one bottle to change or 2 to flush once and change for M90 ?
2 anyone ever just uses 5-30 syn.
3. anypone ever try a turkey baister instead of syringe ?

I post here because I'm LSS but if I dont get views, I may post on 92-99 Bonne.

Yes the turkey baster does not work well. Try the insides of a soap squirter pump. I've seen the note also in the GM manual... I would stick with the GM supercharger oil only. Once you see the ingredients you will realize it'* not synthetic.

Hi Steve,

I just did my '97 SSEi last week - I think we both have the M90. I bought 2 bottles of GM oil at the Pontiac dealer. I think I paid $13 or $14 for both. I used a little plastic baster with a short piece of vinyl tubing on the end. Anything that will let you get in to the bottom of the oil and suck it out of there will work. I put several paper towels folded up under the fill hole and had a little measuring cup handy to catch any drips. I removed as much as I could get out that way, added a bottle, which brought the oil back up to the bottom of the threads. Put in the plug and ran for five minutes, repeat. Nice and clean.

Will did an extra flush, but he said his oil was initially pretty dark if I remember right. Mine wasn't real dark, but it had a sharp odor. I read on the bottle that animal fat is one of the components - maybe it goes rancid over time. Anyway, after the flush, it just smells a little sweet, like mineral oil.

The guys here have a LOT of experience with forced induction; if they recommend GM oil, and have had no SC failures, why take a chance on anything else?

Good luck

Next time, I'll do Fuddyduddy'* soap squirter pump method - gotta be faster and less messy!