Yeah, that makes me nervous. I am currently running a stainless filter. I am going to need to look into one of those micro-glass filters.
I do not know how good the factory fuel filter is, but I would assume it's pretty good to the point that they can warranty these engines despite the vastly different quality of fuel throughout the country. So I would think you are pretty well covered.
I saw that same video and immediately ordered a Radium Microglass filter (6 micron) . I Had been running a Fore Stainless steel filter. 4,000 miles of nothing but E70 (we don't get E85 here). When I removed it, it was spotless. I think that sludge and buildup you seen in his video must either be that he was getting bad fuel, or that water was making its way into his tank. Ethanol is hygroscopic and so if you live in an area with high humidity, it's more important to make sure there is fresh fuel cycling through the system.
By draining the E out of it, or burning it up and then filling the tank with gasoline (and flashing the appropriate gasoline tune obviously) prior to storage.
