Gotta add gas every one in a while

Yeah, if you for example have a 5 day a week commute, maybe purposely drive it like a regular hybrid one or two of those runs per week, say just to or from. Try to use the engine when traffic is lighter, give it a little workout.

 

The Prime and other PHEVs have far better sealed fuel tanks than any other vehicles, with virtually no air exchange while parked, so this should be far less of an issue than with other vehicles. See my link back in post #8.

Some years back, I computed and posted how much water could be in the air inside the tank, without a continual air exchange. It was tiny. There has to be a significant air exchange for much to get in. PHEV designs prevent this as part of their evaporative emissions control.

 

Hey, I didn't mention the rust potential. The poster I replied too did go over two years before a fill up. Without lead, microbes might become a concern at those time scales.

 

Not in my U.S. region.

That is why some many E0 advocates used to link to this website, so that people could find some:
https://www.pure-gas.org/

 

Yes, it's a Canadian thing

What are the Clean Fuel Regulations? - Canada.ca

 

I wonder what will happen if I through that water in the firepit at the cottage (when there is an active fire, of course).

 

Oh, I had missed that news! :

Fuel-Eating Bacteria from Your Gas Cap May Help Clean Oil Spills
Fuel-Eating Bacteria Under Your Gas Cap Could Clean Oil Spills

 

"Historically, conventional wisdom held that the C5–C12 molecules comprising gasoline somehow rendered gasoline inhibitory to microbial growth (Bartha and Atlas, 1987). This conventional wisdom apparently ignored the antimicrobial effect of tetraethyl lead – present at ∼800 mg kg−1 in most gasoline products until the late 1970s when the U.S. EPA and governmental agencies other countries phased out its use (Lewis, 1985). A recent case study in China identified tetraethyl lead removal as a primary factor in high-octane gasoline deterioration in depot and retail site tanks (Zhiping and Ji, 2007)."
https://www.sciencedirect.com/science/article/pii/S0964830512002120

We can put these microbes to work in cleaning up fuel spills and leaks, but they can cause problems when in car's fuel tank. Even without degrading the fuel quality through eating, they can simply clog things.