View Full Version : fuel question

Greendog 2550
07-03-2011, 04:01 PM
I have a Bluewater 2550. I think my gauge may be off. When the last bar is flashing, How much gas should I have left? Appreciate any feedback.

07-05-2011, 02:33 PM
With my 2550 and yamahas this past weekend my last bar started flashing.
I had filled the boat to the max knowing that we were headed offshore fishing on Sunday.
My gauge read that I had used 168 gallons when the bar starting flashing.
I hold 178 gallons so I am going to say that 10 gallons were remaining.
I have not refueled yet and in my experience the fuel gauge has been plus or
minus one gallon off in the past. Hope this helped.

reef raida
07-06-2011, 01:26 PM
On my 2350 I have @ 30 gals left of a 120 gal tank when mine is flashing. This is adjustable but I've left it alone, it has been consistant for the 9 years i've had it.

Greendog 2550
07-07-2011, 08:43 AM
I really appreciate the info. I am trying to treat the remaining fuel with "ring free" and need to have an idea how much to put in. It is way to expensive to treat 178 gallons. Thanks again.

Mellow Yellow
07-07-2011, 02:31 PM
you have 8 bars in your gauge, at least i do in my yamaha gauge, if you hold 178 gallons divide that by 8, each bar should be approximately 22 gallons...my main tank has 245 gallons and each bar represents about 30 gallons...its dead on...hope this helps.

Greendog 2550
07-10-2011, 09:00 AM
Do you guys run "ring free" as a shock treatment or maintenance dose?

07-11-2011, 10:54 AM
I run Ring-free all the time as maintenance - 1 oz to 10 gallons.
Been running Stabil marine fuel treatment to help with the
ethanol problems even though my engines have not had any
problems so far
Been adding the Stabil at the same ratio - 1 oz to 10 gallons.
Ever figure out how much fuel you had left with the flashing bar.

Greendog 2550
07-15-2011, 09:28 AM
I got the answer at least for my boat anyway. What led up to all this was I have been trying to run the gas down to do a treatment dose with ring free. I did not notice the flashing bar on the fuel gauge and I was out at the steeples. Made it all the way in. Guestimated the amount of fuel left and treated the remaining. Dropped the boat in the river, went out the inlet, and ran up and down the beach. I now have run around 100 miles and still have gas. Bit the bullet and filled up today and she took 168 gallons. so near as I can tell, there is somewhere between 30-40 gallons when the light starts to flash. I called Bluewater and was told the sending unit is in the front of the tank for my boat so it may be different for others. Thanks for the help though.

Square Grouper
07-20-2011, 02:32 PM
I can tell you what each bar means in my 2550 (Yamaha rigged). I've drained the fuel completely (twice) since I've owned it. Just did it a few months ago to switch to non-E fuel.

Each notation was taken right when the bar switched (example - 4 bar level was documented when the fifth bar actually popped up) to simulate you running the fuel level down.

4 bars - 95 gals
3 bars - 85 gals
2 bars - 68 gals
1 bar (solid) - 55 gals
1 bar flashing - 30 gallons

Ring Free - Yes I run it, as a constant treatment, always have always will.
Yamalube - Accept nothing less.

Greendog 2550
08-09-2011, 09:42 AM
I sure do appreciate all of the input on this.