This weekend I was changing the oil in my daughters 2012 Ford Fiesta. While the oil was draining I started paging through the owners manual. In the maintenance section was a warning about using oil filters that do not meet Ford specifications resulting in voided warranty. But they offered nothing to clarify exactly what specifications they had in mind. So I did a little poking around on the net and found that Ford had apparently experienced oil starvation engine failures resulting from the disintegrating of anti drainback valves in some aftermarket filters. Ford technicians were advised to look for small bits of rubber material (usually red in color) in the engine. If the telltale rubber bits are found, the warranty claim is denied. Does anybody know any of the specific history of this? What brand of filters were coming apart? Or was it more than one brand? And I'm kind of surprised that the defective rubber valve was red. I thought the red valves were usually the better silicone valves. Particularly concerning is that I just installed a Fram Ultra filter in this car, I'm suspecting Fram may have been the culprit brand with this issue and this filter has a red anti drainback valve.