Capt John wrote:

(Always keep your tank full.)

The keep your tank full business has been pretty much demolished here and in
other venues. It isn't practical anyway unless you cruise from marina to
marina and spend a lot of time fueling. Constantly topping up instead of
burning the fuel means that there will always be a large component of older
fuel in the tank mix.


Another point, those 2 micron filters on your Racor, check with your
engine manufacturer.....

This can be an issue in most circumstances. However, with the fuel
polishing system (I agree BTW that it is a silly name but it's the one in
current usage) the Racor gets much cleaner fuel than in a typical system.
Because the Racor is one of the smallest filters available it is way
oversize for the engine. It's a 15 GPH filter on an engine that normally
draws about 1. This makes the pressure drop across it with the finer
element much less of an issue. It's also being pressure fed by an electric
fuel pump. The gauge between the filter and the engine driven pump always
shows positive PSI so I have no concerns.

I also have a bypass from the fuel polishing pump that can be opened in a
few moments to completely bypass the 2 mu Racor while I change the element.
Better to have that one load up than the engine mounted secondary which is
harder to change and requires bleeding the injectors afterwards.

--
Roger Long