Ah yes, the old magnets on the fuel line trick.
"Basically untreated fuel tends to clump together due to the attraction of molecules, so when the cylinder burns the fuel it is inefficient. This effect will cause your engine to not use the fuel as it could, i.e. decrease in performance, lower mileage and often carbon build up.
How the turbomag solves the above problem:
Turbomags powerful magnets allows these clumps of fuel molecules to be charged with a single polarity, this means the molecules repel of each other which results in the fuel dispersing more efficiently allowing a "complete" combustion. This in turn results into a better fuel consumption, extra power and a lot less carbon build up! "
....er so petrol and diesel are magnetic? Have you trisedot pick up a "clump" or petrol with a magnet. Do as Toureman says and forget it, save your money.