How do you change the oil on an Oldsmobile Alero 1999?

remove the oil plug under the oil pan.(directly under the car. can't miss it/oil pan is under the motor). drain the oil. remove the oil filter(small cylinder towards the front of the oil pan). drain the filter and toss it. install new filter. screw the plug back into the oil pan when completely drained.(with a little elbo grease. you DONT want this to come off when you are on the road. it is a huge fine for pollution and your motor will be destroyed without oil.) but anywho. refill your cars oil to required. place cap back on. youre good to go. not expensive to do. a little messy so dont forget to bring a towel