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 Syntheticsï¾® to do the best job protecting your engine.

Exceeds Emission System Requirements
AMSOIL Synthetic 5W-40 Diesel Oil is a low sulfated ash formulation that exceeds the modern requirements for low emission quality diesel oil. It is compatible with all exhaust treatment devices and is designed to extend the service life of particulate filters.

Controls Soot Thickening and Wear
The advanced synthetic base oils in AMSOIL 5W-40 Diesel Oil are naturally resistant to soot contamination. That, along with a heavy fortification of detergendispersant additives, keeps soot particles suspended independently, helping prevent the formation of larger wear causing particles. Viscosity increase is minimized and soot related wear is controlled.

Maximizes Fuel Economy and Reduces Oil Consumption
AMSOIL Synthetic 5W-40 Premium Diesel Oil has a very low high temperature volatility rate (burn off). Because less oil vapor passes into the combustion chamber, oil consumption and emissions are reduced. Additionally, lower volatility helps AMSOIL Synthetic 5W-40 retain its viscosity after high temperature service for continued dependable protection and excellent fuel economy.

Excels in Extreme Temperatures
AMSOIL Synthetic 5W-40 Premium Diesel Oil resists thermal (heat) breakdown, oxidation and sludge formation better than conventional petroleum oils. And unlike conventional oils, AMSOIL 5W-40 contains no wax. It stays fluid in cold temperatures for improved oil flow, reduced bearing wear and easier starting.

APPLICATIONS
AMSOIL Synthetic 5W-40 Premium Diesel Oil replaces 5W-40, 10W-40 and 15W-40 viscosity oils. It is ﾓbackwards compatibleﾔ with pre-2007 diesel engines and recommended for newer and older diesel and gasoline engines and other applications requiring the following worldwide specifications:

ﾕ API CJ-4, CI-4+, CH-4, CF
ﾕ API SM, SL, SJ...
ﾕ ACEA E7
ﾕ Mack EO-O Premium Plus
ﾕ DDC Power Guard 93K21160
ﾕ Caterpillar ECF-3, ECF-1
ﾕ Cummins CES 2001601
ﾕ Volvo VDS-4
ﾕ MB 8160.3
ﾕ MTU Type II

AMSOIL Synthetic 5W-40 is 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.

SERVICE LIFE
AMSOIL Synthetic 5W-40 Premium Diesel Oil is recommended for use according to the longest service interval established by the engine, vehicle or equipment manufacturer. Drain intervals may be extended when monitored by oil analysis.