Not too long ago i filled up my 05 Navi and my mileage read 348 to E.. I had to double take because im use to the 239-249 range. its been a couple of month with regular readings after fill up and just yesterday it happened again, I filled up like normal went home reading 237. Later on when i went to go back out i turned the car on and it hesitated a bit but when it went oon the mileage read 315. I use the same gas station always 93. has anyone experienced this?