The advanced synthetic technology used to engineer AMSOIL Premium 5W-40 Diesel Oil enhances viscosity properties
and is proven to deliver better fuel economy. In fact, the Environmental Protection Agency’s (EPA) Federal
Test Procedure confirms that AMSOIL 5W-40 Diesel Oil provides up to 3 percent better fuel economy
than conventional 15W-40 diesel oils.
Even
at a 1.6 % fuel reduction on a single truck using AMSOIL vs conventional oils Saves around $945.00 a year. Does
not include Labor, used oil disposal, filter costs and truck downtime for even greater cost reduction.
The truck used in this study is a 2006 lnternational 74OO rear-loading refuse hauler.
This particular truck was chosen because its Navistar DT466 engine employs a hydraulically-actuated, electronically-controlled
unit injector (HEUI) ihat uses engine oil pressure to inject dieselfuel into the combustion chamber. HEUI systems feature
a variable pump (in addition to the oil pump) that pressurizes the oil according to the fuel injection system's needs,
placing a considerable amount of additional strain on engine oil. HEUI systems can raise oil pressure to as high as 3,500
psi, creating great potential for shearing and adding significant stress to motor oil that is already operating in a severe
environment. The HEUI system's reputation for shearing less robust motor oils made the DT466 engine the perfect choice
for testing the durability of AMSOIL Heavy Duty Diesel and Marine Oil.
983-Hour
Drain Interval. Nordic Waste initially installed Shell Rotella T 15W-40 Motor Oil (239 hours). AMSOIL Synthetic 15W-40 Diesel
and Marine Oil was installed for the subsequent service interval and monitored via oil analysis. AMSOIL Diesel and Marine
Oil provided 983 hours of service before oil analysis indicated it was time to drain the oil. As expected, the results revealed
that AMSOIL Diesel Oil contained wear metals well below International's published condemnation limits, even after nearly
1,000 hours of service.
Routine Teardown At approximately
8,000 hours of use, Nordic Waste brought its International 74OO refuse hauler to a certified International Truck mechanic
for the routine teardown. The engine was virtually free of deposits, displayed minimal wear and received high praise from
the mechanic who performed the inspection.
"We experience less downtime and have seen reductions in costs associated with engine overhauls
and replacement parts," said Johnson. "We buy significantly less oil, fewer filters and we experience lower labor
costs. Our biggest savings have been the reduced number of engine overhauls and replacement parts. "Use of AMSOIL Synthetic
15W-40 Diesel and Marine Oil saves Nordic Waste thousands of dollars in oil alone, in addition to reduced expenses for labor,
filters and waste oil and used filter disposal.
Extended drains have allowed Guardian to go from
changing the oil in each truck every month, to changing oil once every three to six months. The company reduced the amount
of waste-oil produced and lessened the demand on its facility and trucks. Guardian employs one mechanic that services the
entire fleet and the trucks remain in service longer than previous units. Before switching to AMSOIL, the trucks would be
replaced after attaining around 150,000 miles. Now Guardian retains its trucks until after they have accumulated over 200,000
miles, keeping most trucks in service for five or more years. This has led to a high level of satisfaction and money saved
for Guardian.
“We are using the oil because
we believe in the oil,” said Guardian President Jason Wick. “It has been beneficial to us because we aren’t
having any service issues with engines, it has reduced maintenance costs and added the convenience of extended drain intervals.”
In each instance AMSOIL has been proven safe
and effective in extended drain use. In fact, these studies show that AMSOIL used in extended drain interval programs consistently
delivers lower rates of engine wear than conventional oils used in conventional drain interval programs.
Southern over-the-road fleet –AMSOIL was used in a Cummins class 8 engines for 75,000-mile drain intervals; the fleet’s normal drain intervals
were 15,000 miles.
Upper midwest grocery fleet – AMSOIL was used in a Cummins NTC 350 engines
for 74,000-mile drain intervals; normal drain intervals were 12,000 miles.
Northern grocery fleet – AMSOIL was used in a Detroit Diesel
Series 60 engines for 79,000-mile drain intervals; normal drain intervals were 20,000 miles.
Virginia Beach, Virginia owner/operator –
AMSOIL was used in a Cummins 350 engine for 325,350 miles without a drain.
Midwestern trucking fleet – AMSOIL was used in Detroit a Diesel
Series 60 engines for 60,000-mile drain intervals; normal drain intervals were 20,000 miles.
The engine showed light to moderate wear throughout, just as an
engine in similar service and lubricated with conventional oil changed at 15,000- to 20,000-mile intervals would show. In
fact, according to the engine rater the parts he examined – cylinder liners, pistons, rings, bearings, valve train components
– could have been put right back in the engine and would have continued to provide the good, dependable service they
had provided all along – after 409,000 miles without an oil change!
