Fuel additives

[caspernz]

One thing, IMHO none of the fuel here is filtered before you buy it, NONE. All the crap, dirt and rust from the boat, the storage terminal, the road tanker and the service stations underground tanks ends up in your fuel tank. I have a fine gause strainer on my vintage bikes gas filler and its often has small dirt like specks in it after I have filled the bike.

That comment is somewhat off the mark.
Fuel terminals run floating suction lines, with low point drains taking care of the settled out solid contaminants and water.
At the servo it's similar, the suction line isn't on the bottom of the tank but a little ways up. Regular sucking out of low points deals with crap and water. Basic filters on pumps feeding the bowsers, but yep very small contaminants will always have the chance to get thru. Change the fuel filter on your own vehicle as per manufacturers' idea and all is good.

[Flip]

The filter on the dispencers is a coarse strainer, a nut and bolt catcher to save the flow meter from damage only. There are multiple paths for dirt and water to enter the fuel in the aged distribution and retail assets.

Do you know how frequently the retail fuel in NZ meets the new fuel regs espcially in regards to total contamination?

The servos don't lock up their fuel after a fill and the sludge in the fuel has been mixed up, and the next customer gets a load. Further to this when the terminals are short of fuel, guess where they get the fuel from....