Maximum Fuel Economy and Extended Drain Intervals in Ultra-Low Emission Diesel Engines
Premium choice diesel oil for model-year 2007 and newer diesel engines requiring API
CJ-4 emission quality oil standards. Also recommended for pre-2007 diesel engines. Incredibly shear-stable to
withstand the stress of heat, soot and acids and help prevent deposits, corrosion and wear. Broad viscosity
range offers superior protection over a wide temperature range. Effectively resists oil consumption and
emmissions, while improving fuel efficiency. Recommended for up to three times the original equipment
manufacturer's drain interval recommendation in diesel applications, not to exceed 50,000 miles/600 hours or
one year, whichever comes first.* Recommended for up to two times the original
equipment manufacturer's drain interval recommendation in gasoline applications, not to exceed 15,ooo miles or
one year, whichever comes first. Compatible with all exhaust treatment devices and designed to extend the
service life of particulate filters.
*Due to fuel dilution issues, extended drain intervals are not recommended for
2007-2009 Caterpillar C13 and C15 on-highway engines or 2007-present Dodge, Ford and GM light-duty diesel
AMSOIL 5W-40 & 15W-40 Synthetic Diesel Oil (DEO) & (DEM) are the
premium choice for API CJ-4 emission-quality diesel oil required by model-year 2007 and newer diesel engines.
It delivers extraordinary lubrication in diesel engines found in com mercial, fleet and personal vehicles.
Built with the latest additive and synthetic base oil technology, AMSOIL Premium 5W-40 Synthetic Diesel Oil
exceeds the higher performance demands of modern engines. It withstands the stress of heat, soot and acids to
help prevent deposits, wear and corrosion. AMSOIL Synthetic 5W-40 & 15W-40 are wax-free with a broad
viscosity range to provide exceptional cold-weather starting and high-temperature protection. The resist
breakdown and offer maximum fuel efficiency over extended drain intervals.
AMSOIL, the leader in automotive synthetic lubrication, produced the world's first API-qualified synthetic
motor oil in 1972. Trust the extensive experience of AMSOIL, The First in Synthetics®, to do the best job
protecting your engine.
Meets Emission System Requirements
AMSOIL 5W-40 Synthetic Diesel Oil is a low-sulfated ash formulation that ex ceeds the requirements for
low-emission quality diesel oil. It is compatible with all exhaust treatment devices and is designed to extend the
service life of diesel particulate filters (DPF).
Extended Drain Performance
AMSOIL Premium 5W-40 & 15W-40 Diesel Oil can extend drain intervals far beyond those recommended for
conventional petroleum oils. Its unique synthetic formulation and long-drain additive system (10.4 TBN) deliver
superior engine protection, cleanliness and performance over extended drain in tervals. AMSOIL 5W-40 & 15W-40
Synthetic Diesel Oil provides maximum protection for up to 3X the OEM-recommended drain interval and even further
with oil analysis. As seen in the graphs, AMSOIL Premium Diesel Oil provided both superior TBN and viscosity reten
tion over 400 hours of severe-service operation.
Improves Fuel Economy
The advanced synthetic technology used to engineer AMSOIL Premium 5W-40 & 15W-40 Diesel Oil enhances viscosity
properties and are proven to deliver better fuel economy. In fact, the Environmental Protection Agency's (EPA)
Federal Test Procedure confirms that AMSOIL 5W-40 & 15W-40 Diesel Oil provides up to 3 percent better fuel
economy than conventional 15W-40 diesel oils. At a mix of 55 percent city/45 percent highway driving, the average
improvement is 1.6 percent and at straight highway driving the average improvement is 1.25 percent.
Minimizes Oil Consumption and Emissions
Due to its low rate of volatility (burn-off), AMSOIL 5W-40 & 15W-40 Synthetic Diesel Oil are able to reduce oil
consumption and emissions dur ing operation. Lower volatility helps AMSOIL Premium Diesel Oil retain its viscosity
after high-temperature service for dependable protection and excellent fuel economy.
AMSOIL Premium CJ-4 5W-40 Synthetic Diesel Oil is recommended for diesel engines and,
where appropriate, gasoline engines requiring any of the following specifications:
API CJ-4, CI-4+, CF, SM
ACEA E7, E9
Mack EO-O Premium Plus
DDC Power Guard 93K218
Caterpillar ECF-3, ECF-2
MTU Type I & II
Plus the 15W-40 (DME)
handles MS10902 specifications also.
AMSOIL 5W-40 & 15W-40 Synthetic Diesel Oil are compatible with conventional and synthetic motor oils. Mixing
AMSOIL motor oils with other oils, however, will shorten the oil life expectancy and reduce the performance
benefits. AMSOIL does not support extended drain intervals where oils have been mixed.
Aftermarket oil additives are not recommended for use with AMSOIL motor oils.
AMSOIL Premium CJ-4 5W-40 & 15W-40 Synthetic Diesel Oil are recommended for extended drain intervals in engines
that are unmodified and in good operating condition.
Diesel Engine Service
Three times (3X) OEM* recommendation, not to exceed 15,000 miles or one year, whichever comes first.
*Operating conditions and drain intervals for normal and severe service are defined by the OEM. Refer to your
Note: Extended drain intervals are not recommended when using biofuels containing >10%
ethanol or 5% biodiesel (B5). Follow OEM drain intervals or extend drain intervals with oil analysis.
Original Equipment OEM 10W-30 & 15W-40
Synthetic Diesel Oil
OEC 10W-30 Synthetic Diesel Oil
AMSOIL OE Synthetic Diesel Oil provides excellent protection and performance in both on- and off-road diesel
engines for the original equipment manufacturer’s recommended drain interval. It is a licensed API CJ-4/SN motor
oil suitable for both modern and older diesel applications, including those equipped with turbochargers. AMSOIL OE
Synthetic Diesel Oil exceeds the higher performance demands of modern engines and withstands the stress of heat,
soot and acids to help prevent deposits, wear and corrosion.
• API licensed CJ-4, SN • ACEA E9 • MAN 3575 • Renault RLD-3 • MTU Type 2.1 • Mack EO-O • Volvo VDS-4, VDS-3 •
Cummins CES 20081 • MB 228.31 • CAT ECF-3, ECF-2, ECF-1-a
OED 15W-40 Synthetic Diesel Oil
Provides excellent protection and performance in both on- and off-road diesel engines for the original equipment
manufacturer's recommended drain interval. Suitable for both modern and older diesel applications requiring API
CJ-4 specifications. Exceeds the higher performance demands of modern engines and withstands the stress of heat,
soot and acids to help prevent deposits, wear and corrosion.
API licensed CJ-4, CI-4+, SN ... • ACEA E9 • DOC 93K218 • Cummins CES 20081 • MB228.31 • CAT ECF-3, ECF-2,
ECF-I-a • Mack EO-O • Volvo VDS-4 • MAN 3575 • Renault RLD-3 • MTU Type 2.1