*** This product has been discontinued and replaced with product code ADP ***
Formulated for Excellent Diesel Engine Protection and Performance. 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 meets API CJ-4 specifications and is suitable for
both modern and older diesel applications.
1-Quart Bottle
1-Gallon Bottle
2.5-Gallon Bottle
30-Gallon Drum
55-Gallon Drum
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
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.
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).
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.
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.
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.
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.
AMSOIL OE Synthetic Diesel Oil is recommended for the intervals stated by the original equipment manufacturer (OEM). Refer to the owner's manual for the specific oil change interval. Replace the oil filter at each oil change as specified by the OEM.
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).
Click here to view the MSDS Data Sheet for AMSOIL OED.
Keep out of the reach of children. Don't pollute. Return used oil to collection centers.
| TYPICAL TECHNICAL PROPERTIES AMSOIL OE 15W-40 Synthetic Diesel Oil (OED) | 15W-40 (OED) |
| Four-Ball Wear Test @ 40 kg, 75°C, 1200 rpm, 1 hour; scar diameter, mm (ASTM D4172) | 0.53 |
| Kinematic Viscosity @ 100°C, cSt (ASTM D445) | 14.5 |
| Kinematic Viscosity @ 40°C, cSt (ASTM D445) | 101.3 |
| Viscosity Index (ASTM D2270) | 147 |
| CCS Viscosity @ -20°C, cP (ASTM D5293) | <5500 |
| Flash Point °C (°F) (ASTM D92) | 230 (446) |
| Fire Point °C (°F) (ASTM D92) | 248 (478) |
| Pour Point °C (°F) (ASTM D97) | -38 (-36) |
| NOACK Volatility, % weight loss (g/100g) (ASTM D5800) | <8.0 |
| Total Base Number (ASTM D2896) | 9.0 |
| High-Temperature/High-Shear Viscosity, cP (ASTM D5481) | 4.3 |
Product Name: OE Series API CJ-4 Synthetic 15W-40 Diesel Oil (OED)
Current
Rating: 5 out of 5 stars
Votes & Reviews: 17 vote(s) and 18 user reviews.
Reviewed by SUPERDAVE: 
Keeps my personal vehicles and drag bikes running clean and efficient!!!
Reviewed by ectjr:
I wouldn't use anything else in my diesel pusher motorhome. I travel extensively site seeing and enjoy fewer oil changes due to the quality of this oil.
Reviewed by John Wick:
I like
Reviewed by Matt:
Use Amsoil in my diesel pickup and blown away at its ability to stay clean for more than 6000 miles. As a retired mechanic I'm familiar with oils and engine maintenance. I've never seen such great performance from any oil. I've been sold on Amsoil for a few years now. Recommend to anyone, all the time. Keep up the great work!
Matt
Reviewed by None:
I have used AMSOIL 15W-40 OE oil for well over 20 years, both in my Chevy HD2500 Duramax and my earlier Dodge RAM 2500 Cummings diesel. It has performed superbly. I recently changed injectors at 200k miles and had my fuel rails adjusted. The mechanic said he couldn't believe how clean the engine internals were and how little wear was exhibited. I think I made a convert that day.
Reviewed by Racer 114:
I use Amsoil in all my vehicles. Im not easy on my vehicles. I tow, I race, I work hard all the time and expect my vehicles to perform at all times.
Reviewed by James:
The best oil on the Earth
Reviewed by Clifford:
Very difficult to find full synthetic 15W-40 for my Chevy Duramax. I find I can get the oil delivered to the house, at a better price, for better oil than I can get locally. Kind of a No-Brainer.
Reviewed by DAVE:
Use it on my tired '94 chev 3/4 ton with a 350tbi...keeps the engine clean after running it after a few oil changes..great alternative for something that uses a little oil
Canada
United States
I use this in all my vehicles
Ram 2500 diesel runs smooth and cleaner