N62B44: Glad you edited your last post before I replied - I was going to get pretty nasty! LOL. Yeah, it's a troublesome design. Apparently not only are extended oil changes to blame here, but the change in fuel formulations over the years (ethanol). Regardless, it is what it is and we have to do what we can - including fooling the SES light and getting through emissions testing....both of which I did.
Anyway...you and I are good now? LOL.