Caution: Rant...
Here's a problem with the swap: failure to record the odometer at fillup! Sigh. Yes, the trip mileage resets automatically after the second key-turn (which got me once), but it's a recurring trend. So here we are with another estimated tank. I really worked it for a 54 mpg displayed FE at 1/4 tank before the tradeoff, so it's purely an estimate based on previous driver performance... it was 400-something on the trip before it reset.
RH77