Formulated for use in both gasoline and diesel engines as well as motorcycle/ATV. Contains 1378 ppm zinc and 1265 ppm phosphorus for excellent flat tappet camshaft protection. Buy in Canada or the USA at wholesale. Request a price list using the form on this page.AMSOIL Synthetic 10W-40 package sizes include: 1-Quart Bottle (or buy case of 12) 1-Gallon Bottle (or buy case of 4) 2.5-Gallon Bottle (or buy case of 2) 16-Gallon Keg 30-Gallon Drum 55-Gallon Drum
AMSOIL Synthetic 10W-40 Premium Protection Motor Oil is multi-functional, heavy duty and formulated with the finest ingredients that AMSOIL has to offer. It is suitable for gasoline engines and as well older diesel applications (API CI-4 Plus) and even ATV/motorcycle use, making this oil a versatile performer for fleets, farms, motorhome and commercial usage. It also perfect for older vehicles that require a heavier viscosity, towing/hauling and other extreme-duty situations.
Heavy-Duty Wear Control
The heavy viscosity synthetic base oil coupled with a stout additive package brings unsurpassed wear protection. The high zinc and phosphorus content makes this oil suitable even for flat tappet cam engines. The shear-stable formula maintains these protective properties even after long-term exposure to extreme heat and heavy loads.
Outstanding High Temperature Defense
AMSOIL Synthetic 10W-40 Premium Protection Motor Oil is designed to withstanding extreme heat without shearing down and thinning out. The resistance to volatility keeps this oil from burning off and vaporizing. This curbs oil usage under extreme conditions and prevents the generation of deposits that result from oil burning. Regular conventional oil cannot compete with this oil when the going gets tough.
Cold Weather Capable
With a cold pour point of -44°C (-47°F), this synthetic 10W-40 oil can stay in service year-round and eliminate the need for seasonal oil changes.
Capable of Long Service Intervals
The sophisticated synthetic chemistry and generous additive package allows AMSOIL Synthetic 10W-40 Premium Protection Motor to stay in service far longer than conventional oil in both gasoline and diesel engines. AMSOIL AMO 10W-40’s additives are designed to neutralize acids and disperse soot over long service intervals.
Suitable for Wet Clutch Transmissions
AMSOIL Synthetic 10W-40 Premium Protection Motor Oil does not contain friction modifiers making this oil suitable for ATV and motorcycle wet-clutch transmissions. The anti-wear properties protects gears, while the low-friction synthetic formula improves shifting performance.
AMSOIL Synthetic 10W-40 Premium Protection Motor Oil is a versatile, heavy-duty engine oil that is suitable for gasoline or diesel engines, motorcycle/ATV, some transmissions and chaincases or anywhere that a 10W-40 is desired requiring the following specifications:
- API SL, SJ, SH, SG
- API CI-4+, C-I-4, CH-4, CF, CF-2
- Caterpillar ECF-1
- JASO MA (Motorcycle)
- MAN 271/3275
- MTU Type 2
- Cummins 20071, 20072, 20076, 20077
- Volvo VDS-2, VDS
- Mack EO-M+, EO-M
- ACEA A3/B3, E3, E5
- MB 228.1, 228.3, 229.1
- Detroit Diesel 93K214
Mixing AMSOIL with Other Brands
AMSOIL Synthetic 10W-40 Premium Protection Motor Oil is compatible with all other brands of conventional and synthetic motor oils. While you can safely mix AMSOIL Synthetic Oil with other brands, this will reduce the drain interval and performance capabilities of AMSOIL oil.
AMSOIL Synthetic 10W-40 Premium Protection Motor Oil is recommended for extended intervals in unmodified, mechanically-sound vehicles or equipment as follows:
Diesel Engine Service
- Normal Service – Up to 25,000 miles (40,000 kilometres) or one year (whichever comes first) or longer based on oil analysis.
- Severe Service*– Up to 15,000 miles (24,000 kilometres) or one year (whichever comes first) or longer based on oil analysis.
Gasoline Engine Service
- Normal Service – Up to 15,000 miles (24,000 kilometres) or one year (whichever comes first) or longer based on oil analysis.
- Severe Service* – Up to 15,000 miles (24,000 kilometres) or one year (whichever comes first) or longer based on oil analysis.
*Severe Service includes turbo or supercharged engines, commercial or fleet operation, vehicles with more than 100,000 miles (160,000 km) without prior continuous use of AMSOIL motor oil, frequent short trips of less than 10 miles (16 kilometres), heavy towing, snow-plow service or operation in dusty conditions.
Motorcycles, Small Engines, Stationary Engines, Heavy Equipment and Other Applications
Follow the manufacturer-recommended oil change interval.
AMSOIL Ea™ Full-Flow Oil Filters are designed for extended drain intervals. They stop smaller particles, flow more oil and last longer than regular filters. For best performance, use AMSOIL Ea™ Full-Flow Oil Filters and replace at the time of oil change. Other oil filters should be changed at intervals as recommended by the manufacturer.
AMSOIL High Performance Synthetic 10W-40 Motor Oil (AMO)
|Kinematic Viscosity @ 100°C, cSt (ASTM D-445)||
|Kinematic Viscosity @ 40°C, cSt (ASTM D-445)||
|Viscosity Index (ASTM D-2270)||
|CCS Viscosity @ -25°C, cP (ASTM D-2602)||
|Pour Point °C (°F) (ASTM D-97)||
|Flash Point °C (°F) (ASTM D-92)||
|Fire Point °C (°F) (ASTM D-92)||
|High Temperature/High Shear @ 150°C and 1.0 X 106 s-1, cP (ASTM D 4683), cP||
|Four Ball Wear Test (ASTM D 4172 @ 40 kgf, 150°C, 1800 rpm, 1 hour, Scar in mm)||
|Noack Volatility, % weight loss (ASTM D5800)||
|Total Base Number||