The 2.5% fuel seen on the short 3,511 mile interval change and a bit on the previous change is pretty much entirely due to not letting regens finish. This was a period when I was scrambling around getting ready for a 3 week, 4,000+ mile trip and simply didn't have time to drive around the block to let the regens complete. The <0.5% changes prior were the same fuel, same overall useage and same Ford PM-22a additive. The last change on the report covers the 4,000 mile trip hauling a 2,000# truck camper and towing a 10,000# trailer, the 3,511 change was immediately prior to that trip. The 4,000 mile trip halfway across the country and back surely included some bio-blend, but shows no fuel dilution, so (quality truckstop) bio in itself seems to not be an issue fuel dilution wise.