SAE 80W-90 Marine Lower Unit Synthetic Gear
for applications requiring the following specifications:
·AUTO SPEC GL-4
AMSOIL Synthetic Gear Lubes are extreme pressure lubricants engineered
specifically to meet the high temperature/high load demands of
today's geared equipment. AMSOIL Synthetic Gear Lubes, unlike
conventional lubricants, don't break down in extreme heat and
form damaging deposits, varnish and sludge. AMSOIL Synthetic Gear
Lubes maintain their protective capability even in thermally stressed
conditions, preventing the ridging, rippling and spalling caused
by surface distress. In addition, the superior lubricity of AMSOIL
Synthetic Gear Lubes improves fuel economy and provides limited
Resist Oxidation and Thermal Breakdown
AMSOIL Synthetic Gear Lubes resist the damaging
effects of heat and oxidation at temperatures much higher than
conventional gear lubes can resist. AMSOIL Synthetic Gear Lubes
inhibit the formation of acids and will not thicken or develop
sludge, even under severe operating temperatures such as those
encountered in heavy hauling and fleet operation.
AMSOIL Synthetic Gear Lubes have an extremely low
coefficient of friction due to its synthetic construction. With
reduced friction, excessive operating temperatures in transmissions
and differentials are reduced by 20°F to 50°F. By controlling
friction, AMSOIL Synthetic Gear Lubes reduce component wear, resist
thermal degradation and improve fuel economy up to five percent.
Provide Low Temperature Protection
AMSOIL Synthetic Gear Lubes remain fluid at extremely low temperatures
to provide instant lubrication to components during start-up.
In low temperatures, conventional gear lubricants thicken to make
shifting difficult. AMSOIL Synthetic Gear lubes resist low temperature
thickening to provide superior component protection, smoother
shifting and increased fuel economy.
Protect Against Rust and Corrosion
Moisture penetration can cause the rusting of gears
and bearings. AMSOIL Synthetic Gear Lubes coat components with
a durable, protective film to prevent the formation of harmful
rust or corrosion.
High Load Carrying Capacity
AMSOIL Synthetic Gear Lubes have excellent load
carrying capabilities to protect gear surfaces in high load and
sped conditions. They maintain their viscosity when exposed to
the extreme shearing forces of hypoid differentials. AMSOIL Synthetic
Gear Lubes provide an extra margin of protection that effectively
increases gear life.
Proved Seal Compatibility
AMSOIL Synthetic Gear Lubes increase seal life and
reduce oil leakage due to pressure build-up. They are compatible
with the elastomer materials used to make seals and will not cause
excessive swelling, shrinkage or hardening.
Protect Against Surface Distress
AMSOIL Synthetic Gear Lubes are thermally durable
to protect gears against surface distress in extreme pressure
conditions. They provide a tough lubricating film that resists
the wear, pitting and spalling caused by surface distress. With
their superior film protection, AMSOIL Synthetic Gear Lubes maintain
their extreme pressure additives to increase component life.
AMSOIL Synthetic Gear Lubes contain special anti-foam
additives to inhibit the formation of air bubbles in the gear
box. When foaming is eliminated, lubricant circulation and load-carrying
ability are improved.
With their chemically advanced formulation, AMSOIL
Synthetic Gear Lubes last longer than conventional petroleum gear
lubes. In non-commercial passenger vehicles under normal conditions,
AMSOIL Synthetic Gear Lubes do not have to be drained. In situations
where severe water and/or dirt contamination occurs, a chemical
lube analysis can determine if the gear lube is still serviceable.
Also, AMSOIL Synthetic Gear Lubes can be recycled along with used
motor oil because they contain no chlorine.
AMSOIL 75W-90, 80W-90 AND 85W-140 Gear Lubes exceed
the lubrication and performance requirements for gear boxes where
MIL-L-2105D, AUTO SPEC GL-5 and API MT-1 lubricants are specified.
AMSOIL Synthetic Gear Lubes provide limited slip performance.
Although generally not necessary, manufacturers' limited slip
additives may be used in conjunction with AMSOIL Synthetic Gear
AMSOIL 80W-90 GL-4 Gear Lube is recommended for
marine outboard and stern drive lower unit gears and bearings.
It is also recommended where the manufacturer specifies GL-4 performance.
AMSOIL 80W-90 GL-4 Gear Lube is not recommended as a replacement
for API GL-5 products.