After a transmission snafu last boating season, my NT 42-047 (now named Tiramisu) was on the hard for some time.
Readying for this season, thought it best to consider fuel polishing systems for the stored 400+ gallons of fuel .

Has anyone added a fuel polishing system to their NT?
Are there DYI models recommended or commercial items withing a reasonable cost range?
Design elements, set up options, and other recommendations would be greatly appreciated.

Thank You
Robert

Robert Leviton, MD, MPH
Tiramisu 42-047
Mobile      |    +1.914.715.8102
Fax            |  +1.914.381.6819
Email        |    Robert@RobertLeviton.commailto:Robert@RobertLeviton.com

Hi Robert My tug, Kismet 2006 37-158, sits in the water at my dock unused from early October to end of April every year for the past 12years .Aside from leaving the tanks relatively full in October, I have never had a fuel problem. I change the fuel filters in early May every year. I don't think you have to worry about fuel polishing which can be an expensive proposition. Best regards Mike McBryde Kismet 37-158.Sent from my Galaxy
-------- Original message --------From: Robert Leviton via Sentoa sentoa@lists.sentoa.org Date: 2026-05-24  9:30 a.m.  (GMT-08:00) To: Sentoa List Serve sentoa@lists.sentoa.org Cc: Robert Leviton Robert@RobertLeviton.com Subject: [Sentoa] Any suggestions for Fuel Polishing After a transmission snafu last boating season, my NT 42-047 (now named Tiramisu) was on the hard for some time.Readying for this season, thought it best to consider fuel polishing systems for the stored 400+ gallons of fuel .Has anyone added a fuel polishing system to their NT?Are there DYI models recommended or commercial items withing a reasonable cost range?Design elements, set up options, and other recommendations would be greatly appreciated.Thank YouRobertRobert Leviton, MD, MPHTiramisu 42-047Mobile      |    +1.914.715.8102Fax             |   +1.914.381.6819Email        |     Robert@RobertLeviton.commailto:Robert@RobertLeviton.com

I kept mine 32 for. 30 years and never a problem. But with my triton 24 lts gas engine I do have a company take call fuel out and three days later they clean tank and fill it up.   

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On Sunday, May 24, 2026, 12:45 PM, mmcb396317 via Sentoa sentoa@lists.sentoa.org wrote:

Hi Robert My tug, Kismet 2006 37-158, sits in the water at my dock unused from early October to end of April every year for the past 12years .Aside from leaving the tanks relatively full in October, I have never had a fuel problem. I change the fuel filters in early May every year. I don't think you have to worry about fuel polishing which can be an expensive proposition. Best regards Mike McBryde Kismet 37-158.

Sent from my Galaxy

-------- Original message --------From: Robert Leviton via Sentoa sentoa@lists.sentoa.org Date: 2026-05-24 9:30 a.m. (GMT-08:00) To: Sentoa List Serve sentoa@lists.sentoa.org Cc: Robert Leviton Robert@RobertLeviton.com Subject: [Sentoa] Any suggestions for Fuel Polishing
After a transmission snafu last boating season, my NT 42-047 (now named Tiramisu) was on the hard for some time.
Readying for this season, thought it best to consider fuel polishing systems for the stored 400+ gallons of fuel .

Has anyone added a fuel polishing system to their NT?
Are there DYI models recommended or commercial items withing a reasonable cost range?
Design elements, set up options, and other recommendations would be greatly appreciated.

Thank You
Robert

Robert Leviton, MD, MPH
Tiramisu 42-047
Mobile      |    +1.914.715.8102
Fax             |   +1.914.381.6819
Email        |     Robert@RobertLeviton.commailto:Robert@RobertLeviton.com

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Hi Robert I should have added that I add a biocide ( Biobor @ 50% more than manufacturers recommended amount) every time I fill up. I have 3000 hours on my Cummins and have done two trips from Vancouver to South East Alaska. Mike Kismet 37-158Sent from my Galaxy
-------- Original message --------From: Robert Leviton via Sentoa sentoa@lists.sentoa.org Date: 2026-05-24  9:30 a.m.  (GMT-08:00) To: Sentoa List Serve sentoa@lists.sentoa.org Cc: Robert Leviton Robert@RobertLeviton.com Subject: [Sentoa] Any suggestions for Fuel Polishing After a transmission snafu last boating season, my NT 42-047 (now named Tiramisu) was on the hard for some time.Readying for this season, thought it best to consider fuel polishing systems for the stored 400+ gallons of fuel .Has anyone added a fuel polishing system to their NT?Are there DYI models recommended or commercial items withing a reasonable cost range?Design elements, set up options, and other recommendations would be greatly appreciated.Thank YouRobertRobert Leviton, MD, MPHTiramisu 42-047Mobile      |    +1.914.715.8102Fax             |   +1.914.381.6819Email        |     Robert@RobertLeviton.commailto:Robert@RobertLeviton.com