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Old 07-26-2017, 07:20 AM   #41
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Scott and all

I can attest to how well algae x works. I bought one unit and attached it to my starboard engine fuel line. It clogged with crud and the Racors plugged also, the port engine had the same plugged Racors. So, being a scientist (LOL) I switched the algae x to the port side. If plugged with crud and so did the Racors and surprise, surprise this happened at the same time the starboard Racors plugged.

Conclusion: I wasted money on buying the algae x. This was with my old boat that had water in the fuel coming from some unknown place.

To me polishing is a marketing tool akin to filtering but costs the boater more.
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Old 07-26-2017, 07:32 AM   #42
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Scott and all

I can attest to how well algae x works. I bought one unit and attached it to my starboard engine fuel line. It clogged with crud and the Racors plugged also, the port engine had the same plugged Racors. So, being a scientist (LOL) I switched the algae x to the port side. If plugged with crud and so did the Racors and surprise, surprise this happened at the same time the starboard Racors plugged.

Conclusion: I wasted money on buying the algae x. This was with my old boat that had water in the fuel coming from some unknown place.

To me polishing is a marketing tool akin to filtering but costs the boater more.
To me it has become a word game.

If you add oversized filters, a centrifuge, and a coalescing unit and return the fuel to something other than an engine, it appears that is polishing.

Well, heck..... add all that to a boat that can get bad fuel, hold it in huge tanks and keep it there for long periods of time...sure it makes sense.

But for most of us, none of its needed if you manage your fuel load well and dont get a bad load of fuel. At worst, having an oversized 2 micron filter that you recirc as you see fit, should give you the same fuel quality as recently and properly "polished" fuel will.

And especially what CMS pointed out....do the math.
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Old 07-26-2017, 08:29 AM   #43
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I had all 3 of our tanks cleaned professionally--money well-spent. I plan to filter fuel from our two 350-gallon saddle tanks to the 200+ gallon aft tank each day before leaving the dock. The transfer pump moves fuel quickly and it runs it through a large paper towel roll filter. From there, it goes through the usual Racors.

At the end of a cruise, whatever's in the day tank will be returned to the saddle tanks. My theory is that I'll be running on freshly filtered fuel without much chance of crud--when it eventually returns to the saddle tanks--being stirred up and clogging the Racors. The day tank is pristine and the clean out port is infinitely easier to access and inspect than the saddle tanks. We'll see how all this works in practice.
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Old 07-27-2017, 02:21 PM   #44
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I had all 3 of our tanks cleaned professionally--money well-spent. I plan to filter fuel from our two 350-gallon saddle tanks to the 200+ gallon aft tank each day before leaving the dock. The transfer pump moves fuel quickly and it runs it through a large paper towel roll filter. From there, it goes through the usual Racors.

At the end of a cruise, whatever's in the day tank will be returned to the saddle tanks. My theory is that I'll be running on freshly filtered fuel without much chance of crud--when it eventually returns to the saddle tanks--being stirred up and clogging the Racors. The day tank is pristine and the clean out port is infinitely easier to access and inspect than the saddle tanks. We'll see how all this works in practice.
Howdy Angus,
Are you sure about the capacities of your saddle/aft tanks? I just did an inspection/cleaning of the tanks on my 2005 Defever 44. Afterwards, I measured the new fuel going into the saddle tanks and put calibration marks on the sight glasses. I only put 200gal in each tank, but looking at the sight glasses, I don't think another 150gal would fit in there. I've always been under the assumption that the saddle tanks were ~250gal each, and the aft was ~450gal. Curious if the tank design might have changed since your production year.

I also use my aft tank as a "day tank", but don't intend to transfer fuel out of it to the saddles. I have a circ pump on a timer with a 2mic filter that I run once a week to keep things sweet. I built an additional valve manifold system and ran additional tubing that allows the circ pump to take a suction off of the lowest tap on the aft tank (about 1" lower than the normal fuel supply line tap). This is right at the bottom of the V shaped tank, and is the next best thing to having a trash sump in the tank.

Regarding the ease of removal of the aft tank inspection hatch....I agree (unfortunately) as I had to remove mine twice! Once for the cleaning/inspection, then again the next week when I discovered a dead spot in the fuel gauge sender, and had to replace it. It seems that when our pals in China fabricated the tank flange for the gauge, they used a pipe that was about 3/16" too small for the sender's resistor to pass through. So....off comes the ~40 hatch nuts for the second time so I could install the sender from inside the tank! After this weekend's cruise, I'll use my higher capacity portable filter skid that has a flow meter, to calibrate the new aft tank gauge.....no more guessing how much fuel is in there!

Gotta love working on boats cause that represents most of our time aboard!
Luke
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Old 07-27-2017, 05:36 PM   #45
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Have used a Gulf Coast F1 filter container with paper towel filters for 15 years. These are built for trucks and are inexpensive. After my use the paper towel filter is dirty and the fluid I drain out contains some water. Not bad for a cheap system. All this system does is take fuel from the bottom of the tank and return it to the top of the tank.
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Old 07-27-2017, 08:24 PM   #46
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Howdy Angus,
Are you sure about the capacities of your saddle/aft tanks? I just did an inspection/cleaning of the tanks on my 2005 Defever 44. Afterwards, I measured the new fuel going into the saddle tanks and put calibration marks on the sight glasses. I only put 200gal in each tank, but looking at the sight glasses, I don't think another 150gal would fit in there. I've always been under the assumption that the saddle tanks were ~250gal each, and the aft was ~450gal. Curious if the tank design might have changed since your production year.

I also use my aft tank as a "day tank", but don't intend to transfer fuel out of it to the saddles. I have a circ pump on a timer with a 2mic filter that I run once a week to keep things sweet. I built an additional valve manifold system and ran additional tubing that allows the circ pump to take a suction off of the lowest tap on the aft tank (about 1" lower than the normal fuel supply line tap). This is right at the bottom of the V shaped tank, and is the next best thing to having a trash sump in the tank.

Gotta love working on boats cause that represents most of our time aboard!
Luke
Hey, Luke. I should have said the capacities were estimates since I haven't filled them yet. I was given those capacities for our boat and have seen some printed references to 375-gal saddle tanks in Defever 44s and 44+5s, but I don't know for sure what's correct. Just spitballing the dimensions of the aft tank, I get 45,000 cubic inches, which is about 195 gallons. I have those lower taps on my tanks as well, but mine look like they've been plugged with fiberglass resin or something similar. I wish I could use them.
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Old 07-28-2017, 04:55 AM   #47
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"I have those lower taps on my tanks as well, but mine look like they've been plugged with fiberglass resin or something similar. I wish I could use them."

Before you fill the tank sounds like a small drill and proper sized tap might get a low point drain.

Clearing polly or other filler in the fitting is far easier with a tap as most plastic simply crumbles , unlike tapping metal.
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Old 07-28-2017, 07:29 AM   #48
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"I have those lower taps on my tanks as well, but mine look like they've been plugged with fiberglass resin or something similar. I wish I could use them."

Before you fill the tank sounds like a small drill and proper sized tap might get a low point drain.

Clearing polly or other filler in the fitting is far easier with a tap as most plastic simply crumbles , unlike tapping metal.
Thanks, Fred. I'll give it a closer look.
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Old 07-29-2017, 06:02 AM   #49
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If you clean the tap , use a fuel rated valve , and plug the valve "just in case" when its not being used as a low point drain.
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Old 07-29-2017, 07:09 AM   #50
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Finally!

Polishing is a made up term for recreational boating.

Anyone who claims to be professional and speaks of fuel (or oil) cleanliness without using ISO numbers is a charlatan.
Aha, those who do this stuff for a living and have the qualifications are beginning to chime in. Thanks RB and Spy.
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Old 07-29-2017, 06:28 PM   #51
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I noticed your name vs your location. The delta is a long ways from Grass Valley. Do you keep your boat in the delta or up the American River? I'm in Redwood City and I love to run up to Sacramento at least once a year.

Thanks,

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Old 08-08-2017, 08:55 PM   #52
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Algae-x is a biocide and also has a fuel line product that has a magnet inside. I don't remember the talk, but the magnet does some hocus pocus to the diesel.
As I said before, my boat sat for 6 years with no care. Using Algae-x cleaned whatever was in the tanks built in 1942. I found the magnet catches all the little steel particles coming off the tanks before my filters. Anything else is gravy. 3 main tanks of about 600 gallons each, when finally opened years later were clear of sludge of any kind. And I run 2 micron primaries.
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Old 08-08-2017, 09:24 PM   #53
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Our boat is in Isleton on 7 mile slough, home is Grass Valley, about an hour and a half commute (depending on traffic). We spend most weekends on the boat though, we plan on living aboard once we fully retire.
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Old 08-08-2017, 09:37 PM   #54
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Algae-x is a biocide and also has a fuel line product that has a magnet inside. I don't remember the talk, but the magnet does some hocus pocus to the diesel.
As I said before, my boat sat for 6 years with no care.
Ours pretty much sat for 10 years with very little use and half full tanks.
We have since put 800 hours on her without a hint of pressure on the gauges.
No biocide, no magnets, no hocus pocus and no crap in the racor 1000's

Every couple of months I drain a couple of lites out of the crap trap/sump below the pickups, let it settle overnight and tip it back in as its always clean.
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Old 08-09-2017, 05:35 AM   #55
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"Every couple of months I drain a couple of lites out of the crap trap/sump below the pickups, let it settle overnight and tip it back in as its always clean.

No biocide, no magnets, no hocus pocus and no crap in the racor 1000's"

As it should be, your boat was built with a Fuel Tank, instead of a Box for Fuel.
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