After a side-of-the-road and get log-chained home by a milk-truck fiasco, due to clumps of dead "algae" clogging the screen in my piston-lift-pump, I started using one of those cheapie plastic see-thru inline Fram-G15-type filters ahead of the lift-pump.
Sometimes I can go three months; sometimes one day, before the fuel-pressure gauge starts dropping.
I did a bunch of research on the situation; then I ordered FOUR of these :
http://www.marinepartsexpress.com:8080/mpeCart/details.faces?productId=41103601&Go.x=18&Go.y=19
http://www.nauticexpo.com/prod/qlmarine/fuel-filter-22269-52931.html
note : click on "more details"
I got the middle-sized ones.
Here is a very informative article of the problem and the magnetic fuel decontaminators, identical to the ones I have ordered (not here yet) :
http://www.morison.com.au/4x4_3.htm
If you "google" algae in fuel, a whole host of articles will come up on the subject; and, in almost 100% of the testimonials of those who actually had a fuel disease infestation problem, generous applications of so-called algaecides were of little or no effect on the situation.
One thing of note that I have learned :
Many is the fuel-stop and filling-station that has been
wrongly accused of dispensing a bad tank of fuel into someone's tank.
What actually happens is that something happens to create a mass kill of the organisms living inside the fuel-tank, causing them to clump together in gelitanous globs
; then, after running the tank down to the dregs, the blissfully-ignorant truck owner sticks the high-volume nozzle in the tank and commenses to really stir things up; then, about two miles down the road, the engine shuts down for lack of fuel; the filter has clogged.
Not being able to see inside any portion of the fuel-system, not even in the filter, the driver immediately jumps to the conclusion that the fuel they just bought is contaminated and full of crud.
They will then proceed to whine
and tell anyone that will listen that the fuel down at such-and-such truck-stop is no good.
Not one driver that hears the complaint will ever buy fuel at that place again, NEVER, not in a million years; all because living organisms lurk within the dark confines of diesel-fuel tanks.