Later today the Saturn will be getting an oil change. I bought a jug of maxlife nexgen a purolator filter and a quart of mmo.I want to put some mmo in my oil how much should I choose to use. Also I bought the supplies at Walmart and the jug had a coupon on it and it for 5 bucks off at the cash register. Making it a dollar cheaper that regular maxlife. I figured why not it helps keep nexgen alive and it saves me a Buck. Mind you ibdidnt check the coupon expire date because I was just buying it. So I go to the register and its 3 months expired. They wouldn't except it. I went to the service desk and they wouldn't except it. They said it's expired and we didn't put that on our bottles of oil . So I said. Let me show you the bottles since you don't believe me. Well the lady has no interest so at that point I said let me speak to the store manager. I argued to get to speak with him and finally did and showed him the mistake. He made it right andbthen made the guy in tle pull the coupons. I told the manager I don't want anyone to lose their job because the economy is bad and its hard to find new work but its people like that that are rude and disrespectful that are keeping good people from getting jobs. Bad people get the jobs and good people don't basically. I told him that he needed to straighten his people out. I hope he listened because they aren't helping his store any. And customers don't want to deal with rude people. Makes me wonder why I keep going back to Walmart. O I know why because the mom and pop store closed Down!! OK I'm done . Thanks guys