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Rising Fuel Costs - Consumer's Phenomenon Here
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Supporting Member of Barthmobile.com 8/11
Picture of billyt53
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For those of us who own oil burners, aka diesels, we use a pyrometer which measures exhaust gas temperature. The higher the number the more fuel is being consumed (BTU's are being generated)thus giving you a good idea of the load being placed on the engine. Our EGT's run between 750 & 850 degrees at 65 MPH cruise on flat land with no wind. At 750 degrees we average 8.5 mpg and @ 850 degrees we average 7.5 mpg. The single most contributing factor to mpg is speed, like Sammy Hagar proclaimed, I can't drive 55 but I did compromise at 65, down from 75. While I do accept the fact that ultimately it takes what it takes to move our rigs down the road, driver discipline is the single most contributing factor in our cost per mile to operate our vehicles.


Billy & Helen Thibodeaux
Owners of Billy Thibodeaux's Premiere RV, Inc. Scott, LA 70583 I-10 Exit 97
The Farm is near Duson, LA I-10 Exit 92 then N 1 mile on right
Three Full 50 Amp RV Hookups !
www.billyt.com
Data Tag: 9404-3908-36XI-2C
1994 Sovereign 36' Widebody on Spartan IC Chassis.
Powered by 8.3CTA 300 Cummins, 12 BTDC Timing, Borg Warner SV366 Turbo, K&N Motorhome Air Filter, 4" Resonator i.l.o. muffler, BD Exhaust Brake, Fleetgard "Enviroclean" CCV System (No more oil on the Toad)
Mobileye Forward Collision Avoidance/Lane Departure Warning System
MotoSAT HD Stationary Satellite, TracStar SV360 In-Motion Satellite, DirecTV HD
Apple TV, Amazon Fire TV, Radio Labs WiFi Range Extender
Bose Lifestyle V25 Home Theater
LG 32" 16x9 HD LED Living Room
Nexus 21 TV Lift
Samsung 32" HD SmarTV built into Bedroom Wall
Onan 8,000 Quiet Diesel Genset, 500 Ahr Lifeline AGM Battery Bank, 320 Watt Solar Array, Magnum MS2812 Pure Sine Wave Inverter
Toad: 2006 Jeep Liberty Diesel M&G Car Brake
 
Posts: 327 | Location: 1mile north of I-10 Exit 92, Duson, LA USA in The Heart of CAJUN COUNRTY ! ! ! | Member Since: 05-14-2005Reply With QuoteReport This Post
Supporting Member of Barthmobile.com 2/16
Captain Doom
Picture of Rusty
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Amen to that. My smaller engine (than billyt's) runs around 550°F at cruise, ~3 psi boost.

I'd add to billyt's advice that the boost gauge is also a good indicator, as boost will rise faster than EGT (but only slightly faster).

Comparing boost, EGT, and coolant temp - when they get out of their usual harmony - can indicate tme to do something, like change air filter or clean the radiator.

One device can definitely increase your fuel economy: The right foot.


Rusty


MilSpec AMG 6.5L TD 230HP; built-to-order by Peninsular Engines:  Hi-pop injectors, gear-driven camshaft, non-waste-gated, high-output turbo, 18:1 pistons.  Fuel economy increased by 15-20%, power, WOW!"StaRV II"

'94 28' Breakaway: MilSpec AMG 6.5L TD 230HP

Nelson and Chester, not-spoiled Golden Retrievers

Sometimes I think we're alone in the universe, and sometimes I think we're not.
In either case the idea is quite staggering.
- Arthur C. Clarke

It was a woman who drove me to drink, and I've been searching thirty years to find her and thank her - W. C. Fields
 
Posts: 8201 | Location: Brooker, FL, USA | Member Since: 09-08-2005Reply With QuoteReport This Post
Supporting Member of Barthmobile.com 8/11
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10-4 on that Rusty!


Billy & Helen Thibodeaux
Owners of Billy Thibodeaux's Premiere RV, Inc. Scott, LA 70583 I-10 Exit 97
The Farm is near Duson, LA I-10 Exit 92 then N 1 mile on right
Three Full 50 Amp RV Hookups !
www.billyt.com
Data Tag: 9404-3908-36XI-2C
1994 Sovereign 36' Widebody on Spartan IC Chassis.
Powered by 8.3CTA 300 Cummins, 12 BTDC Timing, Borg Warner SV366 Turbo, K&N Motorhome Air Filter, 4" Resonator i.l.o. muffler, BD Exhaust Brake, Fleetgard "Enviroclean" CCV System (No more oil on the Toad)
Mobileye Forward Collision Avoidance/Lane Departure Warning System
MotoSAT HD Stationary Satellite, TracStar SV360 In-Motion Satellite, DirecTV HD
Apple TV, Amazon Fire TV, Radio Labs WiFi Range Extender
Bose Lifestyle V25 Home Theater
LG 32" 16x9 HD LED Living Room
Nexus 21 TV Lift
Samsung 32" HD SmarTV built into Bedroom Wall
Onan 8,000 Quiet Diesel Genset, 500 Ahr Lifeline AGM Battery Bank, 320 Watt Solar Array, Magnum MS2812 Pure Sine Wave Inverter
Toad: 2006 Jeep Liberty Diesel M&G Car Brake
 
Posts: 327 | Location: 1mile north of I-10 Exit 92, Duson, LA USA in The Heart of CAJUN COUNRTY ! ! ! | Member Since: 05-14-2005Reply With QuoteReport This Post
Supporting Member of Barthmobile.com 3/12
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No turbo on my bus, so no boost gauge and also no pyrometer. I just watch my exhaust. If i can see black smoke i know i am wasting fuel, so i let up on the pedal a bit or downshift if needed.
 
Posts: 950 | Location: Left side, top to bottom and back again. :>) | Member Since: 09-08-2003Reply With QuoteReport This Post
FKA: noble97monarch
Supporting Member of Barthmobile.com 3/12
Picture of Moonbeam-Express
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My Detroit Series 60 comes with a thing called ProDriver. It measures fuel consumption constantly. I believe it was designed to track efficiency of multiple drivers in 18 wheelers as it has ability to put in many driver names and compare trips. It also tracks idle time which is a big factor in mileage in urban settings.

I've had the vacuum type gauges on my passenger vehicles, but this is a first for me on an RV. It has a great influence on how I drive as it appeals to my competitive nature to try to beat my last run economy Wink




Formerly: 1997 Barth Monarch
Now: 2000 BlueBird Wanderlodge 43' LXi Millennium Edition DD Series 60 500HP 3 stage Jake, Overbuilt bike lift with R1200GS BMW, followed by 2011 Jeep Wrangler Unlimited,
“I haven’t been everywhere, but it’s on my list.”
 
Posts: 2307 | Location: Laurel Park, NC | Member Since: 03-16-2008Reply With QuoteReport This Post
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