AMSOIL OE 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. It meets API
CJ-4 specifications and is suitable for both modern and
older diesel applications. AMSOIL OE 15W-40 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.
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 OE 15W-40 Synthetic Diesel Oil is a low-sulfated
ash formulation that meets the requirements for
low-emission quality diesel oil and protects under the
most severe conditions found in modern diesel engines.
It is compatible with all exhaust treatment devices and
is designed for engines equipped with diesel particulate
filters (DPF).
Extreme-Temperature
Performance
AMSOIL OE 15W-40 Synthetic Diesel Oil is formulated for
improved heat and oxidation resistance over conventional
petroleum oil for cleaner engine operation, maintaining
power and fuel efficiency for superior engine
performance. Its dependable cold-temperature flow
assures easier start-up and improved post start-up
protection.
Resists Oil Consumption
and Emissions
Due to its low rate of volatility (burn-off), AMSOIL OE
15W-40 Synthetic Diesel Oil is able to reduce oil
consumption and emissions during operation. It maintains
its excellent film strength even during high-temperature
operating conditions to ensure dependable protection,
performance and fuel efficiency.
Controls Soot-Thickening
and Wear
AMSOIL OE 15W-40 Synthetic Diesel Oil is formulated with
premium synthetic base stocks and robust
detergent/dispersant additives that keep soot particles
from agglomerating and forming larger wear-causing
particles. The AMSOIL OE 15W-40 Synthetic Diesel Oil
formulation allows for optimal soot-related viscosity
control to maintain stay-in-grade performance.
APPLICATIONS
AMSOIL OE 15W-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+, SM...
• ACEA E9
• DDC 93K218
• Cummins CES 20081
• MB 228.31
• CAT ECF-3, ECF-2, ECF-1-a
• Mack EO-O Plus
• Volvo VDS-4
• MAN 3575
• Renault RLD-3
• MTU Type 2.1
COMPATIBILITY
AMSOIL OE 15W-40 Synthetic Diesel Oil is compatible with
conventional and synthetic motor oils. Mixing AMSOIL
motor oils with other oils, however, will reduce the
performance benefits.
Aftermarket oil additives are not
recommended for use with AMSOIL motor oils.
SERVICE LIFE
AMSOIL OE 15W-40 Synthetic Diesel Oil is recommended for
the intervals stated by the original equipment
manufacturer (OEM). Refer to the owner’s manual for
specific oil change interval recommendations. AMSOIL
recommends the oil filter be replaced at each oil change
as recommended by the OEM. When using an AMSOIL By-Pass
Filtration System, refer to the By-Pass Oil Filter data
bulletin (G498) for more information.
HEALTH & SAFETY
This product is not expected to cause health concerns
when used for the intended application and according to
the recommendations in the Material Safety Data Sheet (MSDS).
MSDS’s are available upon request at 715-392- 7101 or on
the AMSOIL Website. Keep Out of Reach of Children. Don’t
pollute. Return used oil to collection centers.
For AMSOIL warranty information,
click here.