My motor serial#1B379905-2006 model, I have never changed the fuel filter on my rig and also it has a 50 gal. tank that I filled up when i first bought it. The thing of it is, I have never ran it below a 1/4 of a tank without re-fueling. I was just wondering if i always top it off every trip, if I don't use but maybe a 1/4 of a tank the last trip, if by just adding fuel to the fuel that is in the tank, do i need to empty the tank and start with totally fresh fuel. Remember it a 50 gal tank not cheap. I have a fear of running out of fuel, because those gauges are not totally accurate. Also do I need to change the filter, it is app. 4 years old.I think I know the answer to that one.
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