LoL @ Jsolo! I gotta do a similar thing...I have a log of my fill ups, gallons re-fueled, trip log and price paid. Been doing it since I got the car back to the bay area. Should have done it on my drive up but I was so enthused on having the car and just being that it never crossed my mind

 

Highly recommend saving that info and plotting it in a variety of ways. My favorite is the one that shows me km vs date, definitely seem a change in driving patterns, vacations, road trips, etc.

 

Once every 4 weeks if I don't do road trips. Car getting 380 miles pre tank when driven softly.

 

Once a week! i cant keep my foot off the pedal lol