where the car is parked..
 

...can save fuel.

my dads diesel rig lets it all hang out there, long tanks and shining. no loss, it is thick fuel. A car can't do this. Upon routine for years, I noticed my cars sitting lost fuel, hot weather, especially bursts of hot weather. where I park now, I did notice this does not happen...

http://i227.photobucket.com/albums/d...ru/spitcar.jpg

there is a gradient of gravel with grass growin fitting underneath the car, I could touch the bumper to it. its cool of course.
This is just another fuel tip. And that is a snow shovel in the back for this maine july. :)
I ponder a cardboard box enxlosed to fit under the car in a hot place if it should have to sit in one, near the tank...promoting sunless geothermal.

Shoot...it breaks 100F all the time here lol...sometimes I have nowhere to park but in the sun

Would you like to share something with the rest of the class, bgd73?

What's in your trunk?

Boy it almost seems that if that sun was shining on the hood, it might keep the engine area warmer for when you start. Clear fiberglass hood to act as a greenhouse :)

I keep an ice scraper in my car year round. Sometimes even in summer I need it. Especially this one. I've had a handful of 30F mornings in the last few weeks. Record lows throughout Michigan sunny days have been few and far between. This summer has been a complete joke.

Lake effect winters up there?

Fuel evaporates no matter how hot it is outside... just like ice cubes left in the freezer over time will get smaller, even though it's cold in there.

Scientifically, what happens to the ice cubes is called "sublimation", and what happens to the gas is called "evaporation". Conceptually, they're both just evaporating though.

It's a very hard thing to explain that things don't have to be perceptually hot for them to evaporate... Liquid nitrogen evaporates at a much lower temp than water does, but even water evaporates when the differential of air temperature to itself is positive.

In other words, if the air temperature is hotter than the body of evaporate mass, the mass will evaporate into it, until 100% saturation occurs.

Therefore, gasoline will evaporate, even at night. It just evaporates faster when the temps rise, until the surrounding air is 100% saturated with fuel vapor, at which point, no further vaporization can occur.

File this into "nit picking" and "splitting hairs".

Newer cars have canisters to collect vapors for later combustion and pressurized fuel systems to prevent gasoline evaporation (which is why you can get a CEL if your gas cap is loose), a major contributor of HC emissions from the old cars that vented to atmosphere.

Yaris has a vapor pump and canister