Siphon gas out.

Did you want to do this merely because you're worried about the gas becoming old and causing drivability problems?
If so, I'm not sure that is really a problem any longer with fuels. My wife recently inherited a vehicle that sat unused for about 18 months. I installed a new battery and it fired right up. My wife's friend stored a PT Cruiser at our house for even longer. Same thing, it never was started from the day she dropped it off. Installed a new battery and it fired right up.

 

your fine for at least 6 months. ask your wife not to add any gas.

 

While I am more comfortable with filling up about every three months, the manual does say to go through at least half a tank every six months.

 

I think modern gas tank filler necks are VERY well protected against siphoning. I would take the path of least resistance: just use the gas. Regardless of the temptation to keep engine use to absolute mininum, maybe intentionally avoid charging the car sometimes, enough to run through a tank every couple of months? Probably good for the engine to avoid long stretches without use.

 

mendel, that's heresy!

 

Whoah! Flashback to another thread.

 

You will not be able to siphon.

There is a way to get out the fuel but it is not a simple task. I would avoid doing it if possible.

Disconnect fuel line under the hood and attach a rubber hose. WARNING. Fuel line is pressurized at 42psi.

This can be messy and dangerous if you are not careful. Wear safety equipment. Protect your eyes and face. Do it when the engine and exhaust is cold.

Energize the fuel tank pump and pump it out.

I've had to do this with various customer cars over the years. Latest one was a Prius that got filled with diesel fuel.

 

As above, very hard to siphon these days. You could use Stabil or something

 

Hear all the disclaimers?

In other words, done for good reason. Operative phrase: "had to do this".

For any more trivial reason, say maintaining your high Fuelly status, fugedaboutit: use it.

 

Usual reason I have to do this is for cars that have been sitting unused for a long time ... as in 2 or 3 years.

 

For the PiP, the cost of Stabil plus gas is likely going to exceed electricity. I would echo others and suggest using the gas by pressing the HV button.

 

For quite a while now, I am filling about half tank only.
Side benefit: saving about 20-22 lb of dead-weight...

 

The PiP tank is pressurized to prolong the life of the gas. That's why you push the button and wait 'til the car says it's ok to fill.

 

Which, on my car, happens faster than I can release the button.