Well, If you are going to do it, invest in one of these
http://cgi.ebay.com/ebaymotors/Merce...QQcmdZViewItem
You have to use it- PLEASE dont use a pair of channel locks or any thing of the sort! You will jack up the filter housing.
This little beauty does the job nicely-
Also, only torque it to 25 Nm .
Good luck!