You all are right... i checked and it was 21 gallons... that means im getting horrible fuel efficiency... like 16 mpg... gee and i thought i was getting a good 25

Don't know where I got 14 gallons from, sorry for any confusion.
I still don't get why the reserve tank would come up so early though... i should have still had like 5 gallons left when I refilled today...the trip odometer was at 351 miles.