1998 Carver mariner fuel capacity/consumption

C

cjeccher

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Joined
Apr 29, 2010
RO Number
32109
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107
I re-fuel whenever my fuel gauges read 1/4 because it makes us nervous when on plane the gauges then read close to empty. We usually cruise about 30 miles round trip.

The manual states the fuel tanks are 125 gallon each but then states that the tanks hold a maximum of 210 gallons total.

It usually takes about 160 gallons to fill up from 1/4 tank to full. That should mean I had about 25 gallons left in each tank prior to re-fueling.

At about 1 mile per gallon total, I should still be able to go another 50 miles at 1/4 full. But I would rather be safe than sorry so i jut re-fuel at 1/4.

I don't want to take the chance of running out of gas but do you think my reasoning is sound.
Does anyone with the same boat have any insight?
 
sounds like you're doing fine to me. depending where I'm at on the bay I fill up at 1/2 a tank.
 
I have a 1997 Carver 350 Mariner. It has two 105 gal tanks - I know that's pretty close because I ran out on one of them once. I have found the gauge to be pretty close on both tanks when the vessal is sitting stopped in the water (even though the bow sits a little lower in the water than the stern). HOWEVER, I've learned to not trust the gauge, I just use it for paying closer attention while re-fueling.
 
Thanks for the responses. Yeah, the manual contradicts itself as I explained above. I am going with the 210 total too (I will check to see if tanks are labeled next time we are at the boat).

I have not been keeping exact track of my total miles (need new gps) but it seems like I am only going about maybe 120 miles from full to 1/4 tank. I assumed we should get 200 miles from a full tank of gas (average). That is why I was thinking maybe the gauges were conservative.

From you responses I feel better about just filling up at 1/4 and not worrying.
 
When you replace your GPS, consider getting one that's capable of interfacing with fuel flow meters. This will save you the expense and the mounting hassle of installing meters with a separate display. Once you determine your actual capacity, the meters will help you track it far better than your gauges ever can, and will likely provide useful efficiency info as well.
 
I show the 3297 Mariner holding 192 gallons combined. It should burn between 18 and 22 GPH
 
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