Synthetic Blend 15W-40 Diesel Oil
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AMSOIL Semi-Synthetic 15W-40 Diesel Oil is a modern blend of high performance synthetic base stocks, natural base stocks, and advanced additives. It provides outstanding performance and protection over extended drain intervals in light and heavy-duty diesel engines.

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SAE 15W-40 SEMI-SYNTHETIC GASOLINE & DIESEL OIL: API Licensed CH-4, CG-4, CF-2, CF, SJ
- API CH-4, CG-4, CF-2, CF, SJ
- EMA LRG-1
- ACEA E2, E3
- MIL-PRF-2104G
- CUMMINS CES 20071, 20072, 20076
- DAIMLER CHRYSLER M/B 227.1, 228.1, 228.3
- M.A.N. 271
- MACK EO-L, EO-L+, EM-M, EO-M+
- MTU/DDC SERIES 2000/4000 CATEGORY 1&2
- SCANIA LONG DRAIN
- VW 505
- VOLVO VDS, VDS-2
- ALLISON C-3, C-4 (transmission)
- CATERPILLAR TO-2, TO-3 (transmission)
Exceeds All Performance Requirements of Light and Heavy-Duty Diesel Engines
PRODUCT DESCRIPTION
AMSOIL Synthetic Blend 15W-40 Diesel Oil is a modern blend of high performance synthetic base stocks, natural base stocks, and advanced additives. It provides outstanding performance and protection over extended drain intervals in light and heavy-duty diesel engines.
Remains Stable at Temperature Extremes
AMSOIL Synthetic Blend 15W-40 does not change viscosity (thicken or thin) at temperature extremes like conventional motor oils. With its advanced semi-synthetic formulation, AMSOIL Synthetic Blend 15W-40 is significantly more shear stable than conventional oils, retaining its viscosity at temperatures and loads that break down conventional motor oils.
Resists Oxidation - Reduces Engine Wear
Conventional oils oxidize at high temperatures, causing sludge and deposit build-up that decrease fuel efficiency, contribute to corrosion, and increase engine wear. AMSOIL Synthetic Blend 15W-40 Motor Oil resists oxidation and thermal breakdown far better than conventional oils. It continues to lubricate, cool and protect at temperatures that oxidize conventional oils. In addition, the advanced heat transfer capabilities and high lubricity of AMSOIL Synthetic Blend 15W-40 help engines run cooler with less wear.
Extended Drain Intervals
AMSOIL Synthetic Blend 15W-40 is formulated for extended drain intervals. Its unique synthetic formulation, excellent detergent/dispersant capabilities, and long drain additive package ensure maximum engine protection, cleanliness, and performance over extended drain periods. In fact, 12 TBN AMSOIL Synthetic Blend 15W-40 Motor Oil keeps engines in "like-new" condition even when the oil is used for extended service intervals.
Improves Cold Weather Performance
Due to their wax content, conventional oils thicken in cold temperatures and, on cold starts, may take as long as five minutes to lubricate internal engine parts. AAMSOIL Synthetic Blend 15W-40 stays fluid at very low temperatures. It circulates rapidly to provide vital lubrication and prevent engine wear caused by lack of oil flow. AMSOIL Synthetic Blend 15W-40 allows quicker, easier cold temperature starting with less engine wear.
Reduces Oil Consumption
AMSOIL Synthetic Blend 15W-40 is low volatility oil. Low volatility means less oil vapor passing into the combustion chamber. A reduction of oil vapor means lower oil consumption and lower exhaust emissions. The high detergent alkalinity of AMSOIL Synthetic Blend 15W-40 also helps reduce oil consumption.
Improves Fuel Economy and Reduces Emissions
The premium quality synthetic base oil in AMSOIL Synthetic Blend 15W-40 provides a tough lubricating film on all engine parts, reducing friction and fuel consumption. Reducing fuel consumption reduces exhaust emissions.
Protects Against Rust and Corrosion
AMSOIL Synthetic Blend 15W-40 contains special rust-inhibiting additives. It is ideal for use in engines used intermittently.
MIXING AMSOIL
AMSOIL Synthetic Blend 15W-40 is compatible with petroleum and synthetic lubricants; however, mixing the AMSOIL with other oils will shorten the extended drain period. Oil additives or after-market products are not recommended for use with AMSOIL Synthetic Blend 15W-40 Motor Oil.
APPLICATION
AMSOIL Synthetic Blend 15W-40 Diesel Oil exceeds the following engine oil specifications.
- API CH-4, CG-4, CF-2, CF, SJ
- EMA LRG-1
- ACEA E2, E3
- MIL-PRF-2104G
- CUMMINS CES 20071, 20072, 20076
- DAIMLER CHRYSLER M/B 227.1, 228.1, 228.3
- M.A.N. 271
- MACK EO-L, EO-L+, EM-M, EO-M+
- MTU/DDC SERIES 2000/4000 CATEGORY 1&2
- SCANIA LONG DRAIN
- VW 505
- VOLVO VDS, VDS-2
- ALLISON C-3, C-4 (transmission)
- CATERPILLAR TO-2, TO-3 (transmission)
NEW VEHICLE UNDER WARRANTY
The use of AMSOIL Synthetic Blend 15W-40 Diesel Motor Oil will not void new vehicle warranties. New vehicle warranties are based on the use of oils meeting specific API service classifications and SAE viscosity grades. AMSOIL Synthetic Blend 15W-40 meets and exceeds all current API and SAE requirements (as labeled) and is perfectly suited for use in any new vehicle stipulating those requirements as manufacturer's recommendations.
SERVICE LIFE
AMSOIL Synthetic Blend 15W-40 Heavy Duty Motor Oil is recommended for use according to the longest service interval established by the engine, vehicle or equipment manufacturer. Drain intervals may be extended based on oil analysis.
AMSOIL Ea™ full flow and Donaldson Endurance™ oil filters are designed for extended drain intervals. They capture more wear-causing particles, have less restriction and last longer than regular filters. For best performance, use AMSOIL Ea™ full-flow or Donaldson Endurance™ oil filters.
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). An MSDS is available upon request at 715- 392-7101 or via the Internet on the AMSOIL website. Keep Out of Reach of Children. Don't pollute. Return used oil to collection centers.
TYPICAL TECHNICAL PROPERTIES |
AMSOIL Synthetic Blend 15W-40 Motor Oil (PCO) revised as of 4/07 |
Kinematic Viscosity @ 100°C, cSt (ASTM D-445) |
15.6 |
Kinematic Viscosity @ 40°C, cSt (ASTM D-445) |
114.9 |
Viscosity Index (ASTM D-2270) |
144 |
CCS Viscosity @ -20°C, cP (ASTM D-5293) |
4677 |
Pour Point °C (°F) (ASTM D-97) |
-36 (-32) |
Flash Point °C (°F) (ASTM D-92) |
232 (450) |
Four Ball Wear Test (ASTM D-4172B: 40kg, 75°C, 1200 rpm, 1 hr) Scar, mm |
0.35 |
Noack Volatility, % weight loss (ASTM D-5800) |
9.4 |
High Temperature/High Shear Viscosity (ASTM D-4683) |
4.4 |
Total Base Number |
12.1 |
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