Opps - sorry bout that - you have the correct tool. The "local auto parts dealer" threw me off. I have the same tool that I use on my '95 E320 and I just put the tool down over the filter housing cover and unscrew it. Prior to reading your post and going to my workshop to get the p/n off of my filter housing tool I had never really noticed the bolts in the top with the bolt holes in the side. I don't use them. Make sure you replace the "o" ring gasket on the filter housing cap and torque it back to the proper setting. Also, remove the drain plug on the oil pan first and then loosen the filter housing cap. Let it drain awhile prior to pulling the filter element out.