View Poll Results: What kind of mileage do you get?
3-5 with Gas 11 3.38%
5-7 with Gas 35 10.77%
7-10 with Gas 33 10.15%
10+ with Gas 11 3.38%
3-5 with Diesel 1 0.31%
5-7 with Diesel 21 6.46%
7-10 with Diesel 114 35.08%
10+ with Diesel 99 30.46%
Voters: 325. You may not vote on this poll

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Old 01-27-2018, 05:01 AM   #131
Bus Geek
EastCoastCB's Avatar
Join Date: Sep 2014
Location: Eustis FLORIDA
Posts: 13,343
Year: 2004
Coachwork: IC
Chassis: CE300
Engine: DT466E
Rated Cap: 32
Originally Posted by fsrd View Post
I've got a 93 GMC 6.0L (366) gas 72 passenger bus I'm still in the process of converting into an rv. I'll be making a trip from Salt Lake City UT to Charleston SC in a week and will report back with what my average MPG ends up being.
My 85 Thomas had a gas engine. 3mpg in town, 4 on the highway.
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Old 01-30-2018, 10:40 PM   #132
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Join Date: Jan 2018
Location: Marques, Tx
Posts: 6
Year: 1990
Coachwork: International
Chassis: 3700
Engine: IH 7.3L diesel
Rated Cap: not sure where to find it
Has anyone tried an HHO fuel generator? What about bio diesel cost vs MPG? also, does propane injection on your diesel improve MPG vs the cost of the system? What kind of alternative fuels are people messing around with?
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Old 02-01-2018, 02:45 AM   #133
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Join Date: Jul 2011
Location: Winlcok, WA
Posts: 1,750
Originally Posted by MengerMayhem View Post
Has anyone tried an HHO fuel generator? What about bio diesel cost vs MPG? also, does propane injection on your diesel improve MPG vs the cost of the system? What kind of alternative fuels are people messing around with?
Bio blends in excess of 10% can cause fuel system problems on electronic engines. With the extreme pressures and temperatures the bio gets compressed and baked onto the surfaces and can plug up the works. 2-cycle DD's aren't bothered too much with bio blends but Cat engines are particularly sensitive.

HHO generators in theory sounds great. I have yet to see any scientific studies to show it actually does what it is advertised to do.

Propane injection is to diesel engines what nitrous oxide injection is to gas engines. It is used to give extra boost over short periods of time. If you use propane injection make sure you keep an eagle eye on your exhaust temps. It wouldn't be hard to melt your pistons pulling a long grade while using the propane injection.

Some have tried waste vegetable oil. If you can find a ready source of your base stock at no cost it works fairly well. But cleaning the chunks of leftover fries and fish sticks out of the base stock, keeping it warm enough to flow through the system, and finding enough to make it worthwhile pretty much stops this option before you ever get started. Going by a KFC or Burger King with a 5-gallon bucket to fuel up your VW Rabbit is one thing. Showing up in your bus with several 55-gallon barrels is a whole different story. One thing to remember, many places that used to pay to get rid of their WVO now lease the vegetable oil. When it goes into the WVO tank it already belongs to someone else.

Probably you best bet to get better fuel economy is to make sure your tires are properly inflated and consider using a fuel conditioner.

This one has worked really well for me for a lot of years:
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Old 02-01-2018, 02:21 PM   #134
Join Date: Jan 2018
Location: Upstate, SC
Posts: 249
Diesel engines are run on propane and natural gas only. However, those engines are specifically set up to run such fuels exclusively, not in tandem with diesel fuel. Some gas engines can run propane or natural gas as well as gasoline. These engines are designed to run as dual fuel or tri-fuel. I know a little bit about running propane in older carb engines, but I know very little about diesel engines running on propane or natural gas. My aircraft fuel trucks ran on natural gas. The reason I think this is done is to stop people from running the trucks with avgas or jet fuel. Back then, those fuels were way more expensive than regular gasoline or diesel by nearly $2 per gallon. Both of my fuel trucks were turbo diesels but the fuel system was set up to deal with natural gas. They never left the airport so I don't know what the effiecency was like over the road. They weren't fueled up in a convention manner. I had a service truck top off our tanks once or twice a week. I changed the oil after so many hours of operation. The oil looked new at every change. No hydrocarbons, or very few, to contaminate the oil and turn it black.
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Old 04-19-2018, 07:51 AM   #135
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Join Date: Apr 2018
Location: fort worth
Posts: 4
Year: 2002
Coachwork: Navistar International
Chassis: amtran 3000
Engine: t444e
Rated Cap: 77
Thumbs up What kind of mileage do you get?

hi all just got my bus 2002 amtran 37.5 ft with t444e and i got 11+ mpg pulling a 2003 grand caravan from VA to TX 1000 miles at 60
so im happy with that I think when i done without the van i should get the same
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