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Old 11-06-2015, 05:18 PM   #21
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Tried the string & weight -- no go. Pretty hard to get at the tops of these tanks.
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Old 11-06-2015, 07:23 PM   #22
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If bottom feed, then a sight guage should be easy to rig.
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Old 11-06-2015, 09:39 PM   #23
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When you stop at your local gas station ask the guy if they have any broken ullage sticks.

They usually have one or two broken ones hanging around. Then you can use the matte black edge to get a reading. There is also a paste you can buy that shows the level of the fuel. The only problem with this paste is it has to be scrubbed off pretty often or it gets gummy.

Try 'Tank Tender'. It's super accurate. And dependable.
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Old 11-06-2015, 10:19 PM   #24
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Cappy208 - I have a Tank Tender. I learned two years ago on a Memorial Day, that when Tank Tender shows 4.5" - it means my tank was bone dry....I now use a wooden dowel.
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Old 11-06-2015, 10:56 PM   #25
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Both my boat's 100 gal tanks hold a smidgen over 4 gal per inch. Each has kinky fill pipe that goes from deck fill hole to tank top. 1/4" dowel will not bend enough to go into either tank.

I have a medium dark tan colored fabric line with led torpedo shaped fishing weight on its end. 1/2 tank level is marked... figuring tank gallons using that mark as a guide is not rocket science. Wet look is easy to discern once line is pulled back out. Can tell exactly when point of led weight first touches bottom of either tank.

Stores next to salon pilot station.

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Old 11-06-2015, 11:43 PM   #26
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I use a wood dowel that hangs by the helm station.

It is a bit difficult to see but good enough. I usually know what tank is lower and check the lower (less fuel) tank first so I can read/see the level on the other tank or I only need to check one tank. Since we burn 1gph and have two 50 gal tanks checking fuel level isn't done that often.

I pump a little fuel out of the bottom of the tank to check for water ect.
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Old 11-07-2015, 03:11 AM   #27
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Quote:
Originally Posted by Moonstruck View Post
They check for water in the bottom of the tanks that way. A sticky paste is put on the bottom of the tank, and it will change color to bright red if water is present.

This works well to check for water. Sold by oilfield supply places.

The some company makes a paste that changes colour when contacting hydrocarbons (diesel or gasoline).

On my boat I use a sight glass.
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Old 11-07-2015, 09:25 AM   #28
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You guys know that the common float arm needle level indicators while not particularly accurate are very repeatable , right?
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Old 11-08-2015, 06:40 AM   #29
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The suction units are by far the easiest to install and maintain.

Tank Tender.

Only PIA is to get the tank empty one time and then fill it in 5g or 20g steps to calibrate the gauge from inches of fuel into gallons of fuel.

They also work for FW and waste , and are probably the easiest to clear/maintain in a waste measuring role.
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Old 11-08-2015, 08:11 AM   #30
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If you have a tank with no angles, math works out suitably to calculate GPI figures too.

The tank tender took a while with multiple 'sticks' to confirm its accuracy. But it is spot on. Of course, knowing how far the suction is from the bottom is important. One thing I do wish was installed in my tank is a water cut drain from the bottom of the tank.
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Old 11-08-2015, 10:32 AM   #31
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I have a pair of tarnished brass rods threaded into the top of my tanks. The tarnish makes it pretty easy to see the wet line. With 300 gallons and a single Lehman, it doesn't move very much from year to year.
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Old 01-08-2016, 01:32 PM   #32
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I finally got around to making one. Flat black with notches every inch with the 5th one marked. Used old bike handlebar tape to make a pointless grabber. Looks more like a riding crop than a dip stick
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Old 01-08-2016, 01:46 PM   #33
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For the assistace towboat I used the bottom 3 feet of an old LORAN antenna painted black with carvings where the marks needed to be back into the white fiberglass. The metal ferrule on the bottom is handy as a handle and keeps it from rolling.

Bike tape...hmmmmmm
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Old 01-08-2016, 02:14 PM   #34
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"Looks more like a riding crop than a dip stick..." Tally ho!

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Old 01-08-2016, 02:57 PM   #35
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Good Dipstck Material

Who you callin' a ho?
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