I can see that. There are some places in the US too where extra filters might be a good idea.
I wonder what the filtration specs are on the Kubota fuel filters. I don't remember seeing a micron rating on the box or on the filter itself but that might just be my bad memory. My boat has a 10 micron fuel filter and water separator between the fuel tank and the engine, in addition to another fuel filter on the Yamaha engine itself.
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