1. Thanks for the many replies.
2. Apologies for the slight paranoia ;-)...but year old gasoline does smell a bit funny and seem to have some crud settle out.
3. I do recall someone swearing off diesel pickups back in the 1970's saying they were horrible to start in wintertime cold without an additive.
4. I do know that water will work it's way into a tank...may not be much, but very easy to have a teaspoon or two in the bottom of a gas tank. Of course, I'd guess it zooms right through the fuel pump and injectors without too much disruption of the go-go juice.