Having clean fuel is one of the best things you can do
for your boat. For this reason, you should only add enough fuel to operate it
while you plan on using it. If you do not intend on taking it out again within
a relatively short period time, as it sits, your fuel filters could become
clogged. This has the potential of leading to major trouble down the road. You
should also check your filters regularly to ensure they are clear of sludge or
debris, and replacing them if they are dirty.