AMSOIL Z-RODtm 20W-50 High Synthetic Motor Oil
MODERN TECHNOLOGY FOR CLASSIC CARS
AMSOIL Z-ROD™ Synthetic Motor Oil is specially engineered
for classic and high-performance vehicles. It features a high-zinc
formulation to prevent wear on flat-tappet camshafts and other critical
engine components, along with a proprietary blend of rust and corrosion
inhibitors for added protection during long-term storage. Z-ROD Synthetic
Motor Oil is designed to perform on the street and protect during storage.
PROTECTS
FLAT-TAPPET CAMS
The lifters and
cam lobes on flat-tappet camshafts common to classic and high performance
vehicles slide rapidly against one another, producing high friction and
heat. The friction between the two components can eventually wear down the
cam and affect valve operation, ultimately resulting in lost engine power
and reduced efficiency. In addition, these areas are splash-lubricated
rather than pressure lubricated like other areas of the engine, which adds
extra strain on anti-wear additives like the zinc and phosphorus in zinc dialkyldithiophosphate (ZDDP).
AMSOIL Z-ROD
Synthetic Motor Oil is formulated with high levels of ZDDP to protect
flat-tappet cams, lifters, rockers and other areas susceptible to wear. Its
high-zinc, high-phosphorus formulation provides the extra wear protection
these critical splash-lubricated components require.
PROVIDES LONG-TERM PROTECTION FROM RUST & CORROSION
AMSOIL Z-ROD Synthetic Motor Oil is formulated with a
unique blend of rust and corrosion inhibitors to ensure maximum protection
during long-term storage. To prove its effectiveness, AMSOIL submitted
Z-ROD Synthetic Motor Oil to the Standard Test Method for Rust Protection
in the Humidity Cabinet (ASTM D-1748). This test evaluates the
rust-preventative properties of oil under high-humidity conditions, similar
to those faced by a covered hot rod in a damp garage. The metal coupon
treated with AMSOIL Z-ROD Synthetic Motor Oil showed no signs of oxidation
after 192 hours, while the coupon treated with a leading competitor’s
product failed the test after 24 hours.
APPLICATIONS
AMSOIL Z-ROD Synthetic Motor
Oil is recommended for older or modified engines requiring either 10W-30 or
20W-50 motor oil. Z-ROD Synthetic Motor Oil meets API SL and earlier
specifications, allowing for increased levels of anti-wear additives. ZDDP
levels in Z-ROD Synthetic Motor Oil exceed the limits of API SM and newer
specifications.
MIXING AMSOIL
AMSOIL Z-ROD Synthetic Motor
Oils are compatible with conventional and other synthetic motor oils.
Mixing AMSOIL Z-ROD Synthetic Motor Oils with other oils, however, will
shorten the oil’s life expectancy and reduce the performance benefits.
Aftermarket oil additives are not recommended for use with AMSOIL Z-ROD
Synthetic Motor Oils.
SERVICE LIFE
Because engines in classic cars, hot rods and other
performance vehicles are generally modified, a universal oil drain interval
recommendation for these applications cannot be given. Responsibility for
determining the drain interval duration rests with the owner. As a general
service guideline, the maximum drain interval for Z-ROD Synthetic Motor Oil
should not exceed 5,000 miles or one year, whichever comes first. In
heavily modified engines (e.g. forced induction, nitrous) the maximum drain
interval should not exceed 3,000 miles or one year, whichever comes first.
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TYPICAL PHYSICAL
PROPERTIES
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AMSOIL Z-ROD Synthetic 20W-50 Motor Oil (ZRF)
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Kinematic Viscosity @ 100°C, cSt (ASTM D-445)
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19.1
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Kinematic Viscosity @ 40°C, cSt (ASTM D-445)
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132.5
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Viscosity Index (ASTM D-2270)
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163
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Flash Point °C (°F) (ASTM D-92)
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236
(457)
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Fire Point °C (°F) (ASTM D-92)
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252
(486)
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Pour Point °C (°F) (ASTM D-97)
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-39
(-38)
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High Temperature/High Shear @ 150°C and
1.0 X 106 s-1, cP (ASTM
D-5481)
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4.7
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Four Ball Wear Test (@ 40 kgf,
75°C, 1200 rpm, 1 hour, Scar in mm (ASTM D-4172)
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0.36
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Noack Volatility, % weight loss (g/100g) (DIN-51581)
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5.1
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Total Base Number
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9.0
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