Fuel Tank Capacity

I think that's about max. it's either 12.5 or .75... i'm thinking it's the 12.75. I'm sure someone else will post who knows this number for sure. That is basically the max though.

 

I have put 12.75 gallons in. I had gone 763 miles. That's the record for me....so far.

 

12.75 and 763 miles .... i want that. can't wait to put my stock tires back on.... till then i'll just have to wait to achieve 60mpg again.

 

This spring I'm aiming at breaking the 800 mile barrier.

 

It's a really interesting subject as many people have already questioned the Max fuel capacity. Because of the bladder and cold conditions the capacity might be somewhat low, however, when the weather turns warm all of a sudden the holds more than what the owners manual says. ( 11.9 for the 2005, American gal.) How does one calculate accurate MPG with such a varying capacity? You can't because you can't determine when full is full! It's not a good idea to either run out of gas or overflow on filling.

 

Maximum capacity is 11.9 gallons. Anything else you squeeze in beyond that is filling up the emissions canister... a bad thing to do.

Realistically, you shouldn't ever plan on pumping more than 9 gallons. In other words, don't push the distance (to guarantee you won't ever have to shorten the life of your battery-pack by running out of gas) and stop as soon as the pump clicks off (to help provide consistency for the MPG calculations).

To accurately calculate MPG, just keep track of many tanks in a row. Pumps differences balance out after awhile. Any distance shorter can really only be measured with the Multi-Display.

 

John-
There is no proof or even good circumstantial evidence that the emissions canister is accepting the additional fuel. There is likely a valve that prevents this. Natural sloshing from centrifugal force would otherwise cause the same thing to happen occasionally. Of course, I have no proof of that either. As for the 11.9 maximum capacity, Toyota arrives at that figure, but we have no way of knowing when they call it full. I can get more than a gallon in a 1 gallon fuel can but I can't get more than a gallon in a 1 gallon milk jug. The fuel can maker allows for a little leeway. There is a good bit of plumbing that is getting filled as well. I regularly fill my tank to the top. I don't spill. I have been warned that this practice will hurt my mileage due to flooding the canister, but my current mileage is 61.7 MPG at 121 miles on the tank.
Respectfully submitted,
Ray