ODWms
Member
I recently replaced mine and installed the thumb screw to not have to worry about the screwdriver next time. It was easier than I thought after having put it off for so long (first time replacement at 100,000 miles). Of course I did a thorough cleaning of the coils while I was at it. I’ll tell you this: I was surprised at how clean the filters were for the length of time I postponed the job.