Re: Fuel polishing


Hi Nick,
Whenever Kristy has been sitting for a while, I put a 6 foot 1/2 inch PVC pipe down to the bottom of the tank and pump a gallon into a clear container. I let it sit for an hour or so, and if there’s any water or sludge, it will sink to the bottom and be clearly visible.
I use BioborJr every time I buy fuel.
So far after an initial professional cleaning 10 years ago, I’ve had only clear fuel. I didn’t change the Racors for the first 4 years and never had any water or sludge in them. Since then I change them once a year and they always look new.

Kent Robertson
S/V Kristy
USA cell: 828-234-6819

On Apr 10, 2019, at 2:46 AM, ngtnewington Newington via Groups.Io <> wrote:

Hi Erik,
I am not on the boat now. From memory the fuel exits the bottom of the tank directly to the Racors but There is no valve on a lower sump.
I could drain off the Racor filter very easily. I suspect though that the pick up is just off the bottom of the tank. So the sludge will remain between the fuel pick up and the very bottom of the tank.
There may not be any sludge. Maybe I am seeing gremlins where there are none!
Amelia AML 54 -019 La Palma
On 10 Apr 2019, at 07:08, eric freedman <> wrote:

Hi Nick,
On Kimberlite the tank drains from the bottom. Is it different on the 54?
Fair Winds
Kimberlite Amel Super Maramu #376

-----Original Message-----
From: []
On Behalf Of ngtnewington Newington via Groups.Io
Sent: Wednesday, April 10, 2019 2:00 AM
Subject: [AmelYachtOwners] Fuel polishing

Thanks for the feedback. So the general consensus is that additional
polishing is not required as the Racor primary filter plus engine filter is
fine. So long as one takes the usual precautions. In addition whilst
motoring or running the generator some fuel polishing happens anyway.

This is nice to read.

I only raise this because the newer Amels have common rail turbo charged
engines, where fuel cleanliness is extra important. In addition we may well
be buying fuel with 20% biodiesel, and low sulphur. Biodiesel is more prone
to degrading and bacterial growth.
Amelia has been ashore for 5 months with brim full tank.
It is a shame there is no drain valve to remove a few litres off the bottom
of the tank.

Amelia AML 54-019 currently located ashore in La Palma, Canary Island.
Launching in a couple of weeks and planning to sail to Greece this spring.

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