Thanks for the info. This drop in is for my girlfriends 03 4Runner. It will most likely see very little off road. But I will keep this info. in mind on my 07 Taco. I am thinking more of running an ARB Snorkel on it instead. Also I got the TRD Drop in and I have had many K & N's in the past and the TRD Drop in has a different filter element than K&N. Maybe the concept is the same but the guts are different. I figured it had to do with not enough dry time and coating it too much. I will make sure to go easy on it. <img src="/forums/images/graemlins/patriot.gif" alt="" />