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Russell Beam (Rcbeam)
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Username: Rcbeam

Post Number: 25
Registered: 11-2009
Posted From: 74.131.50.239


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Posted on Tuesday, August 31, 2010 - 8:39 pm:   

Anyone know what the minimum fuel level would be in the tank for a MC8? I don't have a gauge, but have a length of heavy wire that I stick in the tank so see how many inches of fuel I have. I don't want to run it too low, but I want to run out as much of what is there as I can.
steve wardwell (Steve_wardwell)
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Username: Steve_wardwell

Post Number: 85
Registered: 2-2010
Posted From: 75.201.110.97


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Posted on Tuesday, August 31, 2010 - 8:45 pm:   

are you trying to clean your tank ?siphon out the old and in with the new (so you don't lose prime) .............s..............
Jack Conrad (Jackconrad)
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Username: Jackconrad

Post Number: 1331
Registered: 12-2000
Posted From: 75.219.218.206


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Posted on Tuesday, August 31, 2010 - 9:09 pm:   

Depends on whether your bus is sitting level or sitting on uneven ground. If you driver's side is lower you will run dry quicker because the pick-up is on the passenger's side. We try to fill our tank about every 500-600 miles. This means we always have at least 1/4 tank. Stopping to top off more often is easier than priming.
Buswarrior (Buswarrior)
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Username: Buswarrior

Post Number: 1917
Registered: 12-2000
Posted From: 174.89.176.203


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Posted on Wednesday, September 01, 2010 - 2:42 am:   

There is a drain plug in the front face of the tank.

Remove the body panel, two bolts up inside the corners, and it lifts out of the pegs at the bottom.

I would be getting very uncomfortable under 30 US gallons left in a standard tank.

That's somewhere around 4 inches deep?

The more empty space in a fuel tank, the more space for moisture laden air to leave condensation inside as the temperature changes.

happy coaching!
buswarrior
Bob MacIsaac (Wildbob24)
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Username: Wildbob24

Post Number: 112
Registered: 5-2007
Posted From: 184.36.51.125


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Posted on Wednesday, September 01, 2010 - 3:03 am:   

I agree with BW. When I was in the driveaway business, the general rule of thumb was that 4 inches of fuel was the bare minimum. Any less than that risked an out of fuel service call.

Bob
FAST FRED (Fast_fred)
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Username: Fast_fred

Post Number: 1294
Registered: 10-2006
Posted From: 99.153.142.249


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Posted on Wednesday, September 01, 2010 - 5:50 am:   

The only hassle with low fuel on a long trip is the fuel will be really HOT.

A DD at 1800RPM+ will suck about 30GPH and if your lucky return 20 - 24 GPH.

This flow is used to cool the fuel circuit in the head.

That being noted , we have pumped 125G into our
4106 sportscar , which is getting close.

FF
Pete/RTS Daytona (Pete_rtsdaytona)
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Username: Pete_rtsdaytona

Post Number: 627
Registered: 1-2005
Posted From: 97.104.18.110


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Posted on Wednesday, September 01, 2010 - 8:37 am:   

IIRC the spill rate is more like

60+ GPM at max rpms/full load
and
55+ GPH at 1200 rpm/no load
Tom Christman (Tchristman)
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Username: Tchristman

Post Number: 246
Registered: 1-2006
Posted From: 66.218.33.156

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Posted on Wednesday, September 01, 2010 - 11:21 am:   

I use my 1/4 mark as my empty point. You should try to keep the fuel as full as possible all the time to prevent condensation. When you're back from a trip and parking the bus, it should be full. If you haven't experienced it yet, running out of fuel is a real bummer, and not easily restarted. As compared to my Caterpillar that has a built in hand primer pump. A couple hundred pumps, and off you go. Good Luck, TomC
gene reeves (Silverheart)
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Username: Silverheart

Post Number: 5
Registered: 5-2009
Posted From: 64.12.116.203

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Posted on Wednesday, September 01, 2010 - 5:15 pm:   

Even with a fuel on my MC8, I try to keep the fuel level at 1/2 or more. Condensation is an issue with half filled tanks. Not sweating being in a traffic situation (backups do happen) and not having fuel make my day go smoother. And, besides, when I've driven out those 70 gallons, it's time to rest.
FAST FRED (Fast_fred)
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Username: Fast_fred

Post Number: 1296
Registered: 10-2006
Posted From: 99.153.142.249


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Posted on Thursday, September 02, 2010 - 6:40 am:   

WE simply use mileage as the fuel readout is next to the fill.

1000 miles , time for a drink, although most times the PRICE in one particular State or location will stop us short for a better cost per mile.

FF
Russell Beam (Rcbeam)
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Username: Rcbeam

Post Number: 26
Registered: 11-2009
Posted From: 72.250.169.58


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Posted on Friday, September 03, 2010 - 3:09 pm:   

Ok, I guess I didn't ask my question correctly. ON a regular basis I plan to keep the tank full like everyone suggested. What I want to do now is just run out as much of what is there as I can because I don't know how old it is and I want to run it low (just not too low) so I can refill when the weather turns cooler with winterized diesel. This is a one time thing, not planning on running her low all the time. Also, I wanted to know what the minimum inches of fuel would be to not go below. Like the rest, I too do not want to run out and loose prime. Thanks,
steve wardwell (Steve_wardwell)
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Username: Steve_wardwell

Post Number: 88
Registered: 2-2010
Posted From: 75.202.157.7


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Posted on Friday, September 03, 2010 - 4:21 pm:   

how about some fuel conditioner and run it
Jack Conrad (Jackconrad)
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Username: Jackconrad

Post Number: 1334
Registered: 12-2000
Posted From: 75.198.26.136


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Posted on Friday, September 03, 2010 - 4:43 pm:   

Running it low to remove old fuel may stir up "stuff" that is inside the tank. Better carry a couple extra fuel filters "just in case". Jack
Gus Causbie (Gusc)
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Username: Gusc

Post Number: 1210
Registered: 11-2005
Posted From: 70.41.96.39


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Posted on Friday, September 03, 2010 - 5:44 pm:   

As you keep using the bus and adding new fuel it will automatically dilute the old fuel.

No need to make it complicated.
Russell Beam (Rcbeam)
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Username: Rcbeam

Post Number: 27
Registered: 11-2009
Posted From: 74.131.50.239


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Posted on Friday, September 03, 2010 - 5:52 pm:   

All good points guys. I guess I'll just add some conditioner when it turns cold weather and not worry about it.

Looks like from buswarrior, the minimum level should be around 4-5 inches. I have the aux tank, but that would not change the minimum level that you'd not want to go past.
Jack Conrad (Jackconrad)
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Username: Jackconrad

Post Number: 1335
Registered: 12-2000
Posted From: 75.198.26.136


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Posted on Friday, September 03, 2010 - 7:42 pm:   

We always store our coach with a full tank of fuel. This helps prevent moisture in the fuel tank from condensation. Just our way, YMMV Jack
Buswarrior (Buswarrior)
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Username: Buswarrior

Post Number: 1919
Registered: 12-2000
Posted From: 174.91.146.82


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Posted on Saturday, September 04, 2010 - 4:46 am:   

Coach fuel tank and lines are sheltered, unlike on a truck.

Not as critical to worry about fuel gelling.

I'd be more concerned about water from condensation, so throw the correct amount of conditioner in the current tankful and carry on.

happy coaching!
buswarrior
Neil Holmes (Homer) (Homer)
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Username: Homer

Post Number: 12
Registered: 11-2009
Posted From: 139.142.130.2


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Posted on Saturday, September 04, 2010 - 11:47 am:   

Well, from experience a couple of months or so ago, I was coming back from a trip to Prince George BC. I have been doing bonus trips this year. My son in law has been supplying fuel for the bus from the rigs, so basically we are doing free trips. I took a chance and drew down the tank. I was about 20 miles from home when I took a corner, the bus sort of sputtered, but kept going. I drove another 12 miles, and the bus sputtered again on a corner so I stopped the bus on a side road turnoff. Phoned the son in law to come & fuel us up as he only lived 2 miles from where we were. Before he fueled me up I dipped the tank. I only had one inch of fuel showing. The bus was pretty well level and still running. This isn't a normal practice for me, but like Russel, I was interested in finding out exactly where I would run out of fuel. Hope this helps.

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