Salt Lake City (Dump Truck)
Initial Dyno Run
2nd Dyno Run
Engine, Conoco 15W40
Engine, 7000 15W40
Transmission, Dexron III
Transmission, 204SAT
Differentials, Conoco 80W90
Differentials, 267 80W90
No fuel additive
Fuel Additive Diesel Treat 137ULSW
▪Initial test May 4, 2011
▪Mileage 42,563
RPM
W/HP
▪Final test completed July 6, 2011
▪Mileage 42,733
C/TORQ
FUEL/GAL
FUEL/WEIGHT
1st Dyno 2nd Dyno 1st Dyno 2nd Dyno 1st Dyno 2nd Dyno 1st Dyno 2nd Dyno
1400
268.1
274.5
5220.7
5322.9
15.89
15.23
112.19
107.53
1600
270.9
278.9
4543.8
4607.4
16.07
15.40
113.42
108.73
1800
264.8
266.7
3952.7
3981.3
16.35
15.95
115.44
112.62
2000
245.6
247.2
3297.3
3309.2
16.59
16.12
117.15
113.87
1st Dyno
2nd Dyno Reduction
▪ Transmission Temperature:
146.5
142.5
2.7% reduction in temperature
▪ Differential Temperature
126.8
121.8
3.9% reduction in temperature
▪ Tested at Wheeler Caterpillar in Salt Lake City, Utah
▪ Engine: Cummins ISM (335 HP)
▪ All data reviewed and calculated by Dr.
William E. Noonan with letter attached
Fuel reduction was 4.6%
Dr. William E. Noonan
President
16332 Cherry Orchard Drive
Wildwood, Missouri 63040
636-458-2186 636-2625048
City of Salt Lake Salt Truck
Noonan Engineering Solutions has been contracted by Schaeffer Manufacturing
Company as a third party professional to evaluate the results of the chassis
dynamometer runs at the Wheeler Power Systems Dynamometer facility located in
Salt Lake City Utah.
Introduction
Tests were conducted on a 2000 International Salt Truck Unit Number 25005 with
a Cummins ISM engine providing 335 HP. The truck was provided by the City of
Salt Lake. For the initial test the truck had 42,563 miles on engine, transmission
and differentials. This truck was using and had always used lubrication products
other than Schaeffer’s and had never used a diesel fuel additive. The purpose of
these tests was to evaluate the effects of engine oil, transmission oil, differential
oil, and fuel additives formulated by, and supplied by, Schaeffer Manufacturing
Company of St. Louis, Mo. The effects on fuel burn rate (Lbs/Hr) and (Gal/Hr),
wheel horsepower output and any effects on transmission and differential
temperatures were measured. The initial test was performed on 4 May 2011 prior
to any changes. The truck mileage at the start of the initial test was 42,563 miles.
The final test was performed on 6 July 2011, when the truck had 42,733 miles on
the engine, and after all lubricants were changed to Schaeffer’s. Tests were
conducted using a Taylor Dynamometer at Wheeler Power Systems located at the
Salt Lake City Facility using the same fuels for each test condition.
Setup and Tests
Tests were conducted using a Taylor Dynamometer located in Salt Lake City Utah.
The truck was restrained within the dynamometer, the fuel cell was filled with the
locally purchased #2 diesel test fuel, air inlet piping was removed to eliminate any
air restriction and tire pressures were checked to eliminate any drag. After the
vehicle was run to bring operating temperatures to a stabilized condition the
following parameters were measured (RPM, Wheel Horsepower, Torque, and Fuel
Burn Rate measured by volume (Gal/Hr) and weight (Lbs/Hr)). The tests were run
at 1400, 1600, 1800 and 2000 RPM. Transmission and differential temperatures
were checked for temperature reductions.
Test Results
The tabulated data was scanned and digitized for analysis. A cursory check of
horsepower, torque and roll speed appears to be consistent with the size of overthe-road trucks and this check was used to establish confidence in the validity of
the test data. The test data was averaged for a minimum of five data samples at
each rpm. The overall average of fuel burn rate reduction was obtained by
considering both (Gal/Hr) and (Lbs/Hr) for the measured test conditions of 1400,
1600, 1800 and 2000 RPM. This data indicated that the reduction in burn rate
when the Schaeffer’s products were used was 4.61% after analyzing both the
Volume and Weight Burn rate data. Temperature data was also obtained during
the initial and final test conditions. The transmission temperature was 146.5 Deg F
during the initial tests and decreased to 142.5 Deg F during the final condition.
The forward differential temperature was measured at 128.5 Deg F for the initial
condition and decreased to 123.0 Deg F for the final condition. The rear
differential temperature was 125.0 Deg F for the initial condition and decreased to
120.5 Deg F for the final condition. This represents a decrease of 2.73% for the
transmission, a decrease of 4.28% for the forward differential and 3.60% rear
differential. Temperature decreases are important because temperature is a
measure of lost energy associated with parameters such as friction. A decrease in
temperature using the Schaeffer products indicates that more energy is available
for rear wheel torque and consequently improved reduction in burn rate. The
ambient temperature for the initial condition was 59.0 Deg F and 82.5 Deg F for
the final condition.
Conclusion
The addition of Schaeffer’s diesel engine oil, transmission oil, differential oil and
fuel additive used in the Salt Lake City Salt Truck at the Salt Lake City Utah
Dynamometer Facility had a significant reduction in burn rate and should lead to
significant savings in fuel cost over a protracted length of time.
This data was reviewed, analyzed and presented by;
Dr. William E. Noonan
Mechanical Engineer
Noonan Engineering Solutions