If you have a yellow gas cap, go for the yellow or black pump handle. Just stay away from that green one -- it's for diesel. Read the original article on SlashGear.

The yellow caps indicate that the soda is kosher, or fit, to drink on the Jewish holiday of Passover. It's made with sucrose ...

Typically, the beloved soda comes in bottles with a red cap matching its label, but it switches to a yellow cap briefly in the spring. The reason? Passover. The yellow top signifies that the Coca ...

If your vehicle has a green fuel cap, that means it runs on diesel. You’ll find a yellow cap under the fuel door if your car or truck needs gasoline with anywhere from 15- to 85-percent ethanol ...