The Original Synthetic Oil
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SAE 20W-50 Synthetic Premium Protection Motor Oil (ARO)
Formulated for use in both gasoline and diesel engines. Offers
multi-functionality and excellent wear protection. Ideal for applications
where the extra protection of a higher viscosity oil is desired.
Excellent for motor homes and older vehicles, as well as most types of
modern equipment. Also compatible for use in motorcycles.
Performance specifications include: API SL/CF, CI-4 Plus
Package sizes include:
1-Quart Bottle
1-Quart Bottles (case of 12)
1-Gallon Bottle
1-Gallon Bottles (case of 4)
16-Gallon Keg
30-Gallon Drum
55-Gallon Drum
TYPICAL PHYSICAL PROPERTIES
AMSOIL High Performance Synthetic 20W-50 Motor Oil (ARO)
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Kinematic Viscosity @ 100°C, cSt (ASTM D445)
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18.4
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Kinematic Viscosity @ 40°C, cSt (ASTM D445)
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115.7
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Viscosity Index (ASTM D2270)
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178
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Cold Crank Simulator Apparent Viscosity @ -35°C, cP (ASTM D5293)
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3605 (-15)
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Pour Point °C (°F) (ASTM D97)
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-36 (-33)
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Flash Point °C (°F) (ASTM D92)
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232 (450)
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Fire Point °C (°F) (ASTM D92)
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254 (489)
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Four-Ball Wear Test (ASTM D4172: 40kgf, 150°C, 1800 rpm, 1 hr) Scar diameter, mm
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0.40
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Noack Volatility (ASTM D5800) 250°C for 1 hour, % weight loss
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6.5
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High Temperature/High Shear Viscosity cP, X°C, X s-1 (ASTM D4683)
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5.0
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Total Base Number
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>12.2
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AMSOIL Synthetic SAE 20W-50 Motor Oil (ARO)
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Copyright 2008 All Service Oil All Rights Reserved
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PRODUCT DESCRIPTION
AMSOIL Synthetic 20W-50 Premium Protection Motor Oil is specially formulated to provide
superior protection and performance in a wide variety of demanding applications. By
incorporating high quality synthetic base stocks and additives, AMSOIL Premium Protection Oil
exceeds the needs of large and small gasoline or diesel engines in cars, motorcycles, trucks,
motor homes, maintenance equipment, heavy equipment, street rods and marine applications.
AMSOIL Premium Protection Oil resists oxidation, neutralizes acids, inhibits corrosion, reduces
subject to hot temperatures, heavy hauling, trailer pulling or off road use. AMSOIL Synthetic
20W-50 Premium Protection Motor Oil provides flexibility and performance beyond conventional
oils for convenience and trouble free operation.
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.
Provides Superior Wear Protection
AMSOIL Synthetic 20W-50 Premium Protection Motor Oil is a high viscosity oil engineered to
protect against metal-to-metal contact. It resists viscosity shear and is formulated with a heavy
treatment of anti-wear additives for excellent protection of gears, bearings, cam lobes and other
high-pressure components in engines and transmissions. AMSOIL Premium Protection
Synthetic Motor Oil helps extend engine life.
Exceeds the Requirements of Wet Clutch Transmissions
AMSOIL Premium Protection Synthetic Motor Oil contains no friction modifiers, making it ideal
for motorcycles, maintenance equipment and other wet clutch transmission applications.
Formulated to prevent clutch glazing and slippage, it insures smooth clutch engagement and
long term, dependable transmission operation. AMSOIL Synthetic 20W-50 Motor Oil reduces
clutch wear for extended transmission life.
Resists Oxidation and High Temperature Breakdown
AMSOIL Premium Protection Synthetic Motor Oil overcomes the thermal deficiencies common to
conventional petroleum oils. Volatilization (burn-off), oxidation and excessive deposit formation
from high heat are greatly reduced. Viscosity thickening is controlled and engines run clean,
promoting cooler operation and long engine life in air or liquid cooled engines.
Extends Drain Intervals in Gasoline and Diesel Engines
The superior AMSOIL synthetic base stock and additive technology exceeds the requirements
of both gasoline and diesel engines. AMSOIL Premium Protection Motor Oil neutralizes acids,
disperses soot and lasts longer in service than conventional oils.
APPLICATIONS
AMSOIL Synthetic 20W-50 Premium Protection Motor Oil is a multi-use, premium synthetic
lubricant for applications that require or benefit from a higher viscosity oil. It is recommended
for air and liquid cooled, large or small gasoline and diesel engines, transmissions and
chaincase applications where 20W-50 oil is required with any of the following specifications:
API SL/CF, CI-4 Plus
API SJ, SH, SG...
MIL-PRF-2104G
JASO MA (Motorcycle)
MIXING AMSOIL
AMSOIL Synthetic 20W-50 Premium Protection Motor Oil 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 Synthetic Oils.
SERVICE LIFE
AMSOIL Synthetic 20W-50 Premium Protection Motor Oil is recommended for use up to 15,000
miles or one year, whichever comes first, in unmodified(1), mechanically sound(2) automotive
gasoline or diesel engines. In motorcycles, small engines, stationary engines, heavy equipment
and other applications, extend drain intervals based on oil analysis or follow the manufacturer
recommended drain 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 standard OEM* intervals.
*OEM - Original Equipment Manufacturer
(1) Engines operating under modified conditions are excluded from extended drain
recommendations. Examples include the use of performance computer chips; non-OEM
approved exhaust, fuel or air induction systems; and the use of fuels other than those
recommended
for normal operation by the manufacturer.
(2) Mechanically sound engines are in good working condition and do not, for example, leak oil
or consume excessive amounts, are not worn out, do not overheat, do not leak anti-freeze and
have properly working emission control systems. AMSOIL recommends repairing malfunctioning
engines prior to the installation of AMSOIL synthetic oils.
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.
