First 1,000+ miles tank on Gen III Enginer PHEV - It has a bigger thank than you think.

One thing bad that might happen: the person next in line at the station, watching you coax in the tablespoons of gas, might get testy

 

Your average speed seems to indicate you do 100% city, so this is a good example of what's possible in that scenario.

Well done, BTW, hope you're letting your friends, family and colleagues know what is possible with a PHEV. you'll be answering lots of questions about the "but it's only got 13 miles range!" thing later this year with the PHV...

 

May not be covered if Toyota finds out about it, could be considered abuse of the vehicle.

Here's an explanation of how the evap system works:
EVAP Evaporative Emission Control System

Basically, overfilling the tank causes problems that you may not notice at first: the activated charcoal in the canister loses its ability to adsorb gas vapor, so you release gas vapor to the atmosphere, polluting the atmosphere. The charcoal is there to adsorb gas vapors from the headspace in the tank. Exposing it to liquid gas blocks the active adsorption sites.

Ultimately, debris from the tank is carried up into the canister by the liquid and blocks the canister, which then must be replaced.

It's surprising that the system will let you overfill it.

Getting-more-miles-per-tank by in effect making the tank bigger doesn't seem like a good reason to increase pollution.

 

Mendel, that has happened a few times they usually
just go around me to the next pump....

alfon

 

I have checked in the owners manual and can not locate
caution when filling the tank to the brim which will damage
the canister filter.

I have a 2010 Prius maybe the 2011 Prius has added that in the owners manual.

alfon

 

I very rarely see less than 6 bars, so couldn't say anything conclusive. where i live is less than half a mile from a 60mph road going up a hill, i rarely get to drive below 46mph, so always in blended mode. braking heading into a village i get up to 7 bars, driving through the village, with the assist, i drop back down to 6, then back onto 60mph road. i wish we had some of your slower 40mph roads!

 

CPROAUDIO - Congrats! That is quite an accomplishment! If you hadn't posted again near the end, I too would have forgotten what this thread was really about.
As for all you who see nothing wrong with "brimming' a tank......just keep it up..... time will tell whether it is proper or not, but remember it will only apply to THAT vehicle.
I have a GMC pickup which I asked the dealer where I bought it about this very thing, he said "fill away" won't hurt it. And based on that I have done so all along. My Prius,....when it clicks off I try two more times on putting more in, then that's it! Toyota will attempt to deny any claim for a canister as I would think they would know what you are doing.
Someone in one of these previous posts asked what the cost was of this "retro" fit of this Enginer PHEV kit was, didn't see anyone address it..........