I used to have this problem also. I found that a "band" type oil filter wrench of the proper size works best. I bought mine at Napa and it works extreemly well even on the tightest filters. The wrench looks like a thin flexable metal band about 1 1/2 to 2 inches in width and makes a full loop. You just slip it over the filter and pull the wrench "loop" tight and the filter comes right off.