It would be helpful if you posted you're engine, but if you have the 3800
Series II Supercharged engine, this is a good write-up:
I've had friends use a suction bulb or some typ of siphoning device.
There is a plug toward the back of the nose cone. Refill till the oil
level is even with the filler hole.
91 Bonneville 318,901
05 Park Avenue 86,585
That's one great thing about the 3800 series engines. There is so much
information on them on the net. I noticed you posted about just buying a
Monte Carlo SS, which I think has the 3800 supercharged too (?).
www.bonnevilleforum.com and www.clubgp.com have tons of information on those
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