No valves on those sight tubes?
Is there a bottom drain tap to pull off the bottom contents into a clear container just to be sure there is no water? If not use the test kit posted by JDCave and watch your Racors.
Yes there is one at the top and one at the bottom.
I pulled some mystery fluid from the tank and it appears to be diesel fuel. Here are two pics, the first is the site tube after putting in a few gallons at the dock then realizing it was full. You can see how it isn't red. The second is today after opening the site tube valves, now red top to bottom.
View attachment 52278View attachment 52279
Apparently the dye faded in the site tube and I forgot I had filled it three years ago. No excuse for that.
I'd go with the dyed versus undyed fuel. The diesel I buy for my home generator is yellowish as it comes from the filling station locally.
Sorry about the thread drift, but this got me questioning about what I do with my sight tube valves. When away from the boat I keep them closed, and when on the boat I leave them open (the lower ones are not that easy to get to) so I can read them easily when on a trip.
What do others do, or recommend?
Sorry about the thread drift, but this got me questioning about what I do with my sight tube valves. When away from the boat I keep them closed, and when on the boat I leave them open (the lower ones are not that easy to get to) so I can read them easily when on a trip.
What do others do, or recommend?