View Single Post
Old 05-02-2009, 11:30 AM   #81 (permalink)
PA Prius
EcoModding Lurker
 
Join Date: Mar 2009
Location: SE PA
Posts: 18
Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by Matt Herring View Post
I've been doing alot of reading about the gas tank "bladder" in the Prius. It seems it is difficult to get 100% accurate fill numbers (especially in the winter) because the bladder shrinks in size due to the environment it is in (cold or hot). I'll keep an eye on this as I compare in-car mpg vs. SGII mpg vs. actual fill mpg.
Right. Calculating the mileage the manual way after each fill-up is not accurate. I've found the MFD runs consistently 1 mpg high--- calculated by averaging the total miles driven and gallons used after many tanks.

PA Prius


(Support Ecomodder.com & get rid of these annoying ads!)      
 
  Reply With Quote