I have two car filters on my fuel jug as well as a clunk fliter inside the fuel jug. When I pour the fuel into the main jug it is filters through a fine mesh screen, around 15 microns, so it should be pretty clean. I am guessing the dirt come from our desert environment here. No matter what you do to keep it out it still finds a way in.

Don't know what else to say on it. I am still a little baffled.

John