TIPS ON PUMPING GAS (Good information)

[SicStang03]

I heard the pump during the morning thing isn't true. Because of how far the tanks are under ground and the have something surrounding the tanks.

[man]

I heard the pump during the morning thing isn't true. Because of how far the tanks are under ground and the have something surrounding the tanks.

I think you may be right

[KPowerEP3]

I heard the pump during the morning thing isn't true. Because of how far the tanks are under ground and the have something surrounding the tanks.

Exactly. Those tanks are usually anywhere from 8 - 20 feet underground depending on the water table in the area and other regulations. By the time you get that deep underground, you're looking at a significant insulation from heat. Ever been in a cave? It's ALWAYS ~20-30* cooler in there. Same principals.

The vapor thing, well, I buy that theory, because the pumps DO have a vapor return system, and I can see 'splash ups' getting drawn back through the system. That's the same reason you shouldn't top off, at least not with the pump nozzle all the way in your filler hole.