Fuel Polishing

[garyd]

O.K. I've thought this through I think.

We just got done running the boat for 100 hours. The generator for about 200 hours.

At an average of say 20 gallons an hour on the engines total. 20 x 100 = 2,000 gallons.

At a return of say 5 to 1 that's 10,000 gallons that went throught the fuel filters.

The generator ran about 200 hours returning about 5 gallons an hour so another 1,000 gallons got filtered through the fuel filters.

So we turned the tank over 22 times.

If you run a boat like that and get good fuel do ya really need a fuel polishing system?

And in our travels we shook the tank a good stir. LOL. several times.

garyd

 

[Will]

I see no need for a fuel polishing system unless you frequently find yourself buying fuel in places where the quality of fuel may be in question. Your local fuel dock in the US is probably OK. In my 40 years of boating, I only had to have my fuel polished once and that was on a boat I had purchased that had been sitting for years. However, I've only purchased fuel in the US and foreign fuel docks with good reputations.
Will

 

[REBrueckner]

See the FUEL POLISHING SYSTEM thread, on page three as I write this...if you are not having fuel problems, I'd not worry....bad fuel taken on board and long term storage, say two years or longer with any use, are two potential reasons for periodic polishing.....

 

[Brian Degulis]

On a boat with DD or others with high flow rates the only advantage to polishing is if the boat sits idle for months at a time.

Brian

 

[MikeP]

And if you want to polish the DDs fuel during that period AND you have priming pumps, you could connect them to a little mechanical timer and have them polish the fuel for a few hours a day, again, without bothering with money spent of a "fuel polisher."

 

[Brian Degulis]

You would want to make sure that your priming pumps are continous duty most are not. Then I think you would still want to run a line to bypass the engines return line orifice. Without that your pressurizing the fuel to 60-100 psi as it cycles through that will shorten the pump life and your not going to have the flow rate you could have.

Brian