Never had a fuel filter problem, until now. I always change about 12k, but it got away from me this time, and went 17k before I relized it. At WOT, I started starving for fuel, and max boost was down about 5psi. I changed the filter, and noticed the pleats were distorted, almost collapsed, and the media was starting to seperate around the top in a few places. I put a new one in, and she runs normal again. I think I'll pay more attention next time, & change at 12k like I'm supposed to. DIdn't notice any particles or slime, just the normal dark color.