Hacker News new | comments | show | ask | jobs | submit login

It seems to me that you can't be sure unless someone is auditing the weights or measures actually in use. Consumers can do a rough audit using their gas gauges, but it's not particularly precise.

In the US at least the state DOT's do go out and check on the pumps and check both that they are calibrated for liquid measure and that the gasoline falls within the acceptable temperature range (because warmer gasoline occupies a greater volume).

Guidelines | FAQ | Support | API | Security | Lists | Bookmarklet | DMCA | Apply to YC | Contact