Water finder paste

Ask a question...get an answer (or two).
Post Reply
JonnyBoats
Candidate for Boat-Obsession Medal
Posts: 372
Joined: Fri Feb 04, 2005 4:54 pm
Location: Wiscasset, ME
Contact:

Water finder paste

Post by JonnyBoats »

In Good Old Boat magazine: Volume 2, Number 1, January/February 1999, Bill Sandifer has an article http://72.14.253.104/search?q=cache:jJL ... cd=2&gl=us about fuel and water tanks in which he discusses "water finder paste".

Appearently you coat a dowel with this paste and then sound your fuel tank with the dowel. When you pull the dowel out of the tank it shows you how much water is in the bottom of the tank.

Has anyone used this stuff and how did it work for you?
John Tarbox
S/V Altair, a LeComte NorthEast 38
http://www.boatmaine.us
User avatar
Tim
Shipwright Extraordinaire
Posts: 5708
Joined: Tue Apr 01, 2003 6:39 pm
Boat Name: Glissando
Boat Type: Pearson Triton
Location: Whitefield, ME
Contact:

Post by Tim »

Anyone running large tanks, like merchant ships, marinas selling fuel, gas stations, etc. uses thieving paste on a regular basis to determine if there is an unacceptable amount of water in the storage tanks.

It is applicable for use on a boat, too. The paste simply changes color in the presencce of water, but is unaffected by fuels. So it allows you to measure exactly how much water is beneath the fuel in your tank.

I used thieving paste daily when I worked at a marina that had fuel tanks. We sounded the tanks each day with a stick, and applied a bit of the paste to ensure that the fuel remained clean and without water. I also used it when sounding tankage when on training cruises and such at Maine Maritime.

It works exactly as advertised.
---------------------------------------------------
Forum Founder--No Longer Participating
Figment
Damned Because It's All Connected
Posts: 2847
Joined: Tue Apr 08, 2003 9:32 am
Boat Name: Triton
Boat Type: Grand Banks 42
Location: L.I. Sound

Post by Figment »

Yep, it works as advertised. Just a thin smear is all you need. The least bit of contact with water turns the paste from dull grey to bright purple.

Seal the container well afterward, or atmospheric mosture will turn the whole pot purple before your next use.
JonnyBoats
Candidate for Boat-Obsession Medal
Posts: 372
Joined: Fri Feb 04, 2005 4:54 pm
Location: Wiscasset, ME
Contact:

Post by JonnyBoats »

Who, I keep lerning so much about boats! Where can one buy
thieving paste
? Should I just go by the local gas station with a small container and ask the attendent for some and give him a couple of bucks?

Also would it be aa good idea to use this stuff regulary on a sailboat? Perhaps when commissioning in the spring or when laying up in the fall?
John Tarbox
S/V Altair, a LeComte NorthEast 38
http://www.boatmaine.us
User avatar
Tim
Shipwright Extraordinaire
Posts: 5708
Joined: Tue Apr 01, 2003 6:39 pm
Boat Name: Glissando
Boat Type: Pearson Triton
Location: Whitefield, ME
Contact:

Post by Tim »

---------------------------------------------------
Forum Founder--No Longer Participating
User avatar
Peter
Boat Obsession Medal Finalist
Posts: 580
Joined: Mon Nov 15, 2004 11:23 pm
Boat Name: Pagan
Boat Type: Albin Ballad 30
Location: Pedder Bay (Victoria), BC, Canada
Contact:

Post by Peter »

Thanks for the link, Tim.

Hey, you gotta love it when they want $11.75 to ship something the size of a pack of chewing gum to Canada !!
Peter
==================
Victoria BC Canada
Albin Ballad 30

http://www.mostlyaboutboats.ca
JonnyBoats
Candidate for Boat-Obsession Medal
Posts: 372
Joined: Fri Feb 04, 2005 4:54 pm
Location: Wiscasset, ME
Contact:

Post by JonnyBoats »

I found a place to buy a tube in Tamp, FL that sold it to me for $5.50. It is a company that installs underground fuel tanks for gas stations etc.

They had two kinds of paste, one that turns red in water and the other that turns color in the presence of petrolium products. I asked why one would want the later type and was told that when sounding tanks in parking lots on hot, sunny days it can be hard to see the exact height of fuel on the sounding stick and this makes it much easier. I would guess this would also be useful if one suspected that there might be some fuel in a tank (like a water tank) where it shouldn't be.

Anyway I used a dowel with a small amount of paste on it to sound my tank and sure enough, I had water :-( It doesn't take much paste and a tube should last for years. Incidently the stuff lasts a long time, the fellow that sold it to me said he a tube that was 10 years old and still good.

This is rather arcane stuff for a small sailboat, but in my opinion it is one of those special purpose tools that is ideal for a specific task. I can't think of any other simple way to determine the water level in the bottom of a fuel tank.
John Tarbox
S/V Altair, a LeComte NorthEast 38
http://www.boatmaine.us
JonnyBoats
Candidate for Boat-Obsession Medal
Posts: 372
Joined: Fri Feb 04, 2005 4:54 pm
Location: Wiscasset, ME
Contact:

Post by JonnyBoats »

I found a place to buy a tube in Tamp, FL that sold it to me for $5.50. It is a company that installs underground fuel tanks for gas stations etc.

They had two kinds of paste, one that turns red in water and the other that turns color in the presence of petrolium products. I asked why one would want the later type and was told that when sounding tanks in parking lots on hot, sunny days it can be hard to see the exact height of fuel on the sounding stick and this makes it much easier. I would guess this would also be useful if one suspected that there might be some fuel in a tank (like a water tank) where it shouldn't be.

Anyway I used a dowel with a small amount of paste on it to sound my tank and sure enough, I had water :-( It doesn't take much paste and a tube should last for years. Incidently the stuff lasts a long time, the fellow that sold it to me said he a tube that was 10 years old and still good.

This is rather arcane stuff for a small sailboat, but in my opinion it is one of those special purpose tools that is ideal for a specific task. I can't think of any other simple way to determine the water level in the bottom of a fuel tank.
John Tarbox
S/V Altair, a LeComte NorthEast 38
http://www.boatmaine.us
Post Reply