Does anyone know how to change the oil in a '06 Saturn Ion Redline?

http://www.redlineforums.com/forums/howto-section/...

That link has step by step instructions and pictures. While you are there join up, the site is full of knowledgeable folks who are always more than willing to help out. My boyfriend posts on there as TWoods450.

the drain plug is under the car as usual. I think 15mm

This car should have an in-line filter under the hood, near the front of the engine to the right of the throttle and by the upper Rad hose, I think this is a 32 mm fitting; make sure to wrap the hose in a shop towel before removing the old filter

Pretty much everyone answering questions in this area does, I hope!

go on line and find a service manual it will probably tell you.