Gas for the day...

180shabah

Rear Admiral
Joined
Mar 26, 2005
Messages
4,995
Re: Gas for the day...

DANG!!! Shoulda read down farther, I was diggin through boattest, but somebody already posted a chart.
 

642mx

Lieutenant Commander
Joined
Apr 19, 2008
Messages
1,588
Re: Gas for the day...

Figure about 4 mpg crusing and 1.5-2 mph doing water sports.

A word of wisdom, always start with a full tank! You never know what they day will bring on the water.
 

ECVCHAMP

Seaman
Joined
Mar 2, 2010
Messages
67
Re: Gas for the day...

On a normal day out (9:00am to 6:00pm) Wakeboarding, tubin, hangin out at the beachand a little bit of cruzin around the lake I use about 20-25 gal. all day.
 

bhammer

Ensign
Joined
Mar 29, 2008
Messages
963
Re: Gas for the day...

Save your fill up receipts. Most states, if not all, allow you to recover the state highway tax you pay for the boat gas.
 

JoLin

Vice Admiral
Joined
Aug 18, 2007
Messages
5,146
Re: Gas for the day...

Save your fill up receipts. Most states, if not all, allow you to recover the state highway tax you pay for the boat gas.

Not even most. Some. Mine isn't one of them
 

H20Rat

Vice Admiral
Joined
Mar 8, 2009
Messages
5,204
Re: Gas for the day...

Save your fill up receipts. Most states, if not all, allow you to recover the state highway tax you pay for the boat gas.

long discussion on here not long ago, but not many allow it. federal government doesn't technically allow it for recreational boaters, but doesn't mean you can't get it by as a deduction. (just don't get audited!)
 

redone4x4

Lieutenant Commander
Joined
Feb 28, 2009
Messages
1,548
Re: Gas for the day...

A word of wisdom, always start with a full tank! You never know what they day will bring on the water.

this is what i do. No matter what we did that day, on the way home we stop and top the tank off. That way i know next trip we are starting off full again. I burn about 8-15 gallons per day, depending on what we do. Alot of the time the boat is anchored and we are just swimming and hanging on the beach.

If you top off your tank that way a few times, you'll have a good idea after a while of what your average consumption is. just my opinion. but plan on fillin her up the first time! $$$:D
 

CATransplant

Admiral
Joined
Feb 26, 2005
Messages
6,319
Re: Gas for the day...

Big boats and big engines are fun, but expensive. I've finally settled on my little 12' boat with a 6hp outboard. I use about 12 gallons of fuel for the whole season, and I'm on the water at least twice a week.

I can't pull a tube or a skier, and I can only carry one other person with me, but it's enough. I'm on the water, and that makes me happy.
 

jlgab345

Seaman Apprentice
Joined
Apr 13, 2010
Messages
38
Re: Gas for the day...

Thanks for the feedback so far!

When we bought the boat we thought the fuel gauge wasn't working because the tach wasn't. $120 later...turns out it wasn't :) We actually filled it up on the way home from picking it up.

I guess we'll see what she does this weekend just tooling around. Thanks for the advice so far!
 

bigskiohio

Master Chief Petty Officer
Joined
May 3, 2008
Messages
882
Re: Gas for the day...

whatever the rule is 1/3 out -1/3 back 1/3 reserve
 

Philster

Captain
Joined
Sep 15, 2009
Messages
3,344
Re: Gas for the day...

Darn, that means I can go about 5 miles from port before I return!

( Actually, I can go quite far because Wellcraft was nice enough to shove an 88-gallon fuel tank below deck. :eek: How nice of them! I didn't see the money locker to match it though :D )

.
 

Wingnutt

Petty Officer 1st Class
Joined
Jul 16, 2003
Messages
255
Re: Gas for the day...

I used to have a little 18' Regal with a carb'd 4.3 (210 hp) in it, and a full day on the water cruising, pulling the wife and two teenage girls around on a tube would burn about 25-35 gallons of gas depending on how far we would run.

Like others have said, it's amazing how much more fuel you burn when pulling a tube with a couple of people on it. Depending on the size of your tank, (ours was 20 gallons) plan on at least two tank fulls for a dawn to dusk day on the water.
 

sbbamafan

Petty Officer 1st Class
Joined
May 11, 2008
Messages
306
Re: Gas for the day...

I - over a period of years with a temperemental gauge - have figured out that my boat pretty much uses 5 gallons per hour. That is not run time, that is time I am at the lake on that tank of gas. That includes the time skiing, tubing, cruising and with the engine off tied up and hanging out with friends. It is not scientific but I know if I get to the lake at 10 and pull out at 4, I can expect to put in 30 gallons. Sometimes higher, sometimes lower but it is a good general rule and I know if I have been running hard;) or not and can increase or decrease that assumption based on what i am doing.
 

bruceb58

Supreme Mariner
Joined
Mar 5, 2006
Messages
30,581
Re: Gas for the day...

Based on my limited experience with my boat, I'd guess that 10 gph at cruise is reasonable and maybe a bit better than that, but NOT at 35 mph.
Unless you have a fuel flow meter, estimating your MPG/fuel flow is pretty much useless.

My previous estimate of 10GPH @ 35MPH was based off of my boat. My most efficient RPM is at 3500 RPM for my engine/boat. At that RPM, I am also travelling 35MPH and burning around 11.5 GPH. Since the poster's boat is a litle shorter than mine and the engine is smaller, that is where I got my estimate/guess for his.

I have a flow meter on my boat.
 

trejac

Petty Officer 3rd Class
Joined
Jan 31, 2009
Messages
89
Re: Gas for the day...

Save your fill up receipts. Most states, if not all, allow you to recover the state highway tax you pay for the boat gas.

Never thought about that! Good suggestion:)
 

JoLin

Vice Admiral
Joined
Aug 18, 2007
Messages
5,146
Re: Gas for the day...

Unless you have a fuel flow meter, estimating your MPG/fuel flow is pretty much useless.

My previous estimate of 10GPH @ 35MPH was based off of my boat. My most efficient RPM is at 3500 RPM for my engine/boat. At that RPM, I am also travelling 35MPH and burning around 11.5 GPH. Since the poster's boat is a litle shorter than mine and the engine is smaller, that is where I got my estimate/guess for his.

I have a flow meter on my boat.

Based on the table that was published earlier in this thread (after my post) you were pretty close to the mark. I'm surprised that fuel consumption is that low, but that's why I come here- I learn something new every day :)
 

bruceb58

Supreme Mariner
Joined
Mar 5, 2006
Messages
30,581
Re: Gas for the day...

Based on the table that was published earlier in this thread (after my post) you were pretty close to the mark. I'm surprised that fuel consumption is that low, but that's why I come here- I learn something new every day :)
I was always under the assumption that my most efficient cruise was going to be close to 3000RPM...was surprised when I found it to be closer to 3500. The boat in the chart has that boat's most efficient closer to 3000 so it definitely depends on the boat/engine.
 

bowman316

Lieutenant Commander
Joined
Oct 21, 2008
Messages
1,822
Re: Gas for the day...

in general, it think the most effiecnt speed, is right where you are almost about to stop planing. as soon as you get on palne, back off the throttle, till you start to sink back down, then give it a little more to get back up.
 
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