8.2% More MPG With AMSOIL Synthetic Lubricants
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Replacing popular conventional engine and
drivetrain lubricants with AMSOIL synthetic
Lubricants in Class 8 Diesel-Fueled vehicles
increases fuel mileage up to 8.2% according to
the findings of an independent test facility.
Fuel accounts for roughly 37% of class 8 truck operating expenses,
and reducing fuel expenses is a top priority for truck operators
AMS0IL is the leader in the race to
develop fuel efficient low-viscosity
lubricants for trucking and other
heavy-duty diesel applications.
Independent laboratory testing shows
AMSOIL Series 3000 Synthetic
5W-30 Heavy Duty Diesel Oil in the
engine and AMSOIL synthetics in the
drivetrain provide up to 8.2% more
miles-per-gallon than other poplar
lubricants provide.
Lubricants and Fuels
The control lubricants were Shell Rotella T
15W-40 for the engines, Quaker State
SAE 90 for the transmissions and Citco
85-140 for the drive axles. The control
truck used the control lubricants for all
driving segments and the test trucks used
the control lubricants for their baseline
segments.
The test lubricants were AMSOIL Series
3000 Synthetic 5W-30 Heavy Duty Diesel
Oil for the engines, AMSOIL Series 2000
Synthetic 20W-50 Racing Oil for the
transmissions and AMSOIL Series 2000
Synthetic 75W-90 Gear Lube for the drive
axles. The test vehicles used the test
lubricants for their test segments.
All vehicles used Exxon No. 2 diesel fuel
dispensed from the same storage tank for
all driving segments.
Procedure
Each test vehicle ran a baseline segment, in
which the truck was equipped with the
control lubricants, and three testes
segments, in which it was equipped with
the test lubricants. The control vehicle
concurrently ran each driving segment
using control lubricants.
Conditions including speed, tire pressure,
headlight and fan use and window
openings were held constant between all
vehicles in each driving segment. Finally,
testing proceeded only if wind direction,
wind speed and temperature were within
test parameters.
Results
The weight of fuel consumed by each test
vehicle and the weight of the fuel
consumed by the control vehicle in each
driving segment were used to determine
the percentage of fuel saved and the
percentage fuel efficiency improved
obtained by the test lubricants. Results
outside 2 percent of the norm were
discarded.
Findings
The vehicles equipped with AMSOIL
synthetic lubricants in the engines,
transmissions and drive axles
demonstrated up to an 8.2 percent
increase in miles per gallon (mpg) over
mpg obtained by the vehicles equipped
with the control lubricants.
Introduction
At the request of AMSOIL INC., an
independent research institute conducted
a month-long test comparing the fuel
consumption of Class 8 diesel trucks
equipped with AMSOIL synthetic
lubricants to Class 8 diesel trucks
equipped with conventional lubricants.
The research institute used the SAE
J1321 Joint TMC/SAE Fuel
Consumption Test Procedure-Type II,
and industry standard test procedure for
comparing in-service fuel consumption of
a vehicle operated under two conditions,
one with the control lubricants in place,
the other with the test lubricants in place.
Vehicles and Route
The three tests and one control vehicles
were 1995 International Model 9200
truck-tractors with Cummins M-11
engines (rated at 350 hp at 1600 rpm),
Fuller RTXF14710B Transmissions,
Eaton Model DS/RS 404 drive axles
(3.90 ratio), 11R-24.5 low-profile tires
and new oil and air filters. All four
vehicles had been operated between
250,000 and 285,000 miles prior to the
study.
The trucks were equipped with auxiliary
weight fuel tanks and quick disconnect
couplings to facilitate accurate data
gathering.
Each truck pulled a 45-foot long flatbed
trailer equipped with 11R-24.5 low
profile tires and loaded with concrete
blocks so that the gross vehicle weight
(GVW) of each vehicle was
75,550+100 lbs.
The test route represented typical
longhaul interstate highway operations,
with asphalt road surfaces and generally
flat terrain. The low traffic density route
covered a total of 40 miles with a
20-mile southbound segment and the
return northbound segment. Fuel
consumption was measured separately
for each direction.

The trucks traveled 125,000 miles
without an oil change and the rate of
wear metal generation found in used
Series 3000 samples was lower than that
found in used control oil, Pennzoil Long
Life 15W-40, which is changed at
20,000-mile intervals.
Additionally, the viscometrics of the
AMSOIL fluids provide a wear control
benefit in cold temperature applications
since low viscosity fluids flow more
freely in cold temperatures than high
viscosity fluids do. Oils that flow easily
in cold temperatures provide faster
post-startup wear protection in cold
engines than do less fluid oils. They also
provide easier starting and reduced
battery drain.
Finally, AMSOIL products users are
protected by the AMSOIL product
warranty, which, unlike warranties
offered by other oil companies, is not
limited by time or mileage and does
not require user registration and
approval.
Conclusion
AMSOIL synthetic engine, transmission
and drive axle lubricants provide a safe
and effective means to significantly
increase class 8 truck fuel economy.
Discussion
Test conditions were held close to ideal for
maximum fuel economy. In many instances of
less-than-ideal conditions, the synthetic test
lubricants would have provided even more
fuel economy improvement. For example,
synthetics' superior cold temperature fluidity
provides a larger proportion of fuel savings in
cold operating conditions.
Additionally, while the present study did not
include analysis of wear control, wear control
is an important issue with low viscosity
lubricants and one fully addressed by
AMSOIL through additional testing.
Traditionally, the benefit of improved fuel
economy provided by low viscosity lubricants
is offset by a penalty in wear control. Such is
not the case with Series 2000 and 3000
lubricants, as evidenced by Four-Ball Wear
testing conducted by and independent
laboratory (results shown on product labels)
and a growing body of demonstrated on-road
data. (see chart to right)
For example, an ongoing fleet demonstration
is providing evidence of the excellent wear
control of Series 3000. Since January 1996,
AMSOIL and a northern tier trucking fleet
have been conducting a demonstration using
Series 3000 in the 1996 Cummins N-14
ESP3 engines of five 1996 Kenworth Class 8
trucks.
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Truckers - Fleets - Business Owners What Does a Savings of 8.2% Mean?
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Imagine a fleet of 100 class 8 vehicles running an average of 120,000 miles per year at an
average of 6.5 mpg with diesel fuel at $1.35 a gallon. The fleet spends $2,429,308 on fuel
annually.
Now imagine the fleet uses AMSOIL products and improves its miles-per-gallon by 8.2
percent. The Fleet now spends $2,303,427 on fuel annually.

That's a savings of $188,881!
That money could buy a years worth of AMSOIL synthetic lubricants
for the fleet plus a year's fuel for 3 to 6 trucks - with cash left over.
CUMMINS M-11
Sump capacity: 9 gallons
With oil changes at 120,000-mile intervals
900 gal AMSOIL Series 3000 Synthetic 5W-30 Heavy Duty Oil
($18.35/gal in 275-gal totes or 55 gal
(drums)........................................................................$16,515
With oil changes at 60,000-mile intervals......................$33,030
With oil changes at 40,000-mile intervals.......................$49,545
With oil changes at 20,000-mile intervals.......................$99,545
FULLER RTXF-14710B TRANSMISSION
Sump: 25.5 pints (3.2 gal)
One fluid fill
320 gal Series 2000 20W-50 Synthetic Gear Lube
(18.35/gal in 725-gal totes or 55 gal drums)...................$5,872
EATON MODEL DS 404 DRIVE AXLES
Sump: 63 pints (7.9 gal)
One fluid fill
790 gal Series 2000 75W-90 Synthetic Gear Lube
($19.80/gal in 275-gal totes or 55-gal drums)..............$15,642
TOTAL LUBE COSTS
At 20,000-mile oil drain intervals...........................$120,604
At 40,000-mile oil drain intervals.............................$71,059
At 60,000-mile oil drain intervals.............................$54,544
At 120,000-mile oil drain intervals...........................$38,029
After deducting the annual AMSOIL lube cost from 188,881, the
fleet still has between $68,277 and $$150,852 - enough to buy a
year's worth of fuel for 3 to 6 trucks - with cash left over
Extended Drains Save You Even More!
See for yourself! A Virginia owner operator used AMSOIL Synthetic 15-40 Motor Oil for 409,000 miles without an oil drain! His engine was as wear-free as engines in comparable service treated to 20 times the oil changes, according to the findings of a certified, independent engine rater. Brochure (G-1343) Video (G-1350)
Extend your drain intervals! Oil Analyzers Inc. offers the state-of-the-art oil analysis oil analysis essential to any program of extended oil drain intervals. Kit price includes sampling kit and testing.
1 kit (G-1318).................$12.25 (U.S.) 10 kits (G-1319)............$117.50 (U.S.) 25 kits (G-1320)............$275.00 (U.S.) 50 kits (G-1321)............$500.00 (U.S.) 100 Kits (G-1322).........$900.00 (U.S.)
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To order Amsoil by telephone call 1-800-956-5695
Give Customer Number 414157
AMSOIL ALSO CARRIES A FULL LINE OF HASTINGS FILTERS
To order by telephone call 1-800-956-5695 Give Customer Number 414157