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Old 06-11-2013, 09:54 AM   #7
Phil Fill
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City: Everett Wa
Vessel Name: Eagle
Vessel Model: Roughwater 58 pilot house
Join Date: Oct 2007
Posts: 2,919
Quote:
Originally Posted by tracie View Post
Newbie here - what exactly is polishing and why is it needed ? Is it for old fuel or both ? Thanks

Its for new and old fuel to clean/filter the fuel. Mostly for older fuel but can be for new fuel if the fuel has algae/dirt/water. I also filter the fuel when transferring so if there is a concern/problem in one tank it’s not transferred to the other tanks.

Boats tend to have larger fuel tank capacity than what is used/turned in a year and fuel/diesel tend separated out water and/or tanks tend to collect moisture/condensation. As mentioned before if there is no water there is no algae, and tanks tend to rust/corrode less. So it's for a number of reasons.
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