More thanks for the link. I reviewed the whole journal and your system for catch-up maintenance is very similar to mine. Where I’m a little bit stuck is I seem to be getting under 10mpg on my 2007 4.8i after the first 200mi of ownership. Knowing nothing that might not be offensive to me...but my 6mo older 4.8is e53 gets 15-20mpg, no problem....and heavier, I think. My tires are topped up, fresh oil change, clean air filters. I went to search out the fuel filter yesterday and could not seem to find an external one. Lastly, I’ll do spark plugs/coils when I do these diffs, TC, brake, tranny, and coolant drain/refills over the next month...I’ll be even more concerned about the fuel economy if plugs don’t help. Any ideas?