Superior Protection
Against Engine Wear
Marine engines operate under
high loads and RPMs for extended periods of
time, causing traditional automotive oils
to break down and lose viscosity. To ensure
good protection, the NMMA set minimum shear
stability requirements for FC-W. AMSOIL Formula
4-Stroke® Marine Synthetic Motor Oil greatly
exceeds the FC-W shear stability requirements,
outperforming competitive
oils to deliver a superior lubricating film. Formula 4-Stroke® Synthetic Oil also contains
robust anti-wear additives that further reduce
wear in metal-to-metal contact regions (see
Four-Ball Wear Test graph).
 |
While automobile
engines normally operate at around 2,500 rpm,
outboard motors can run twice as fast, requiring
greater levels of wear protection and better
bearing durability than automobiles. In addition,
prolonged idling and low operating temperatures
contribute to fuel dilution, further thinning
the oil. To ensure adequate protection for
their engines, marine engine manufacturers
set minimum high temperature/high shear (HTHS)
viscosity limits. AMSOIL Formula 4-Stroke® Marine Synthetic Motor Oils
are shear stable and formulated with sophisticated
oil additive chemistry, exceeding the HTHS
requirements of both the API and NMMA FC-W
(see graph).
Excellent
Anti-Rust Performance
Marine engines are prone
to rust, leading to uncontrolled wear and
premature engine failure. However, good rust
protection is not natural to engine oil.
It comes only by design. Formula 4-Stroke® Marine
Synthetic Motor Oil is fortified with a special
anti-rust agent, even more than required
to pass stringent NMMA FC-W anti-rust testing.
Applications
AMSOIL Formula 4-Stroke® Marine Synthetic
10W-30 Motor Oil (WCT) is recommended for
gasoline fueled four-stroke outboard, inboard,
inboard/outboard (I/O) and personal watercraft motors. AMSOIL WCT motor oil
is recommended for the following applications whenever an
SAE 5W-30, 10W-30 or straight SAE 30 oil is
called for:
Four-stroke
outboard motors: Honda®, Mercury®,
Yamaha®, Johnson®/Evinrude®, Bombardier/BRP®,
Suzuki®, Nissan®, Tohatsu®
Inboard
and I/O: Mercruiser®, Volvo
Penta®, OMC®, Chrysler® Marine,
Crusader®, Marine Power®, Chevrolet®,
Ford®
Personal
Watercraft: Honda®, Yamaha®,
Bombardier/BRP® (Sea-Doo®), Polaris®
Note: AMSOIL
Formula 4-Stroke® Marine Synthetic
10W-30 is recommended for use in place of
5W-30 as specified by Honda®.
NMMA FC-W •
API SL
Service Life
• Four-stroke
outboard motors and personal watercraft applications: Due to potential fuel dilution or water contamination,
change oil at the engine or watercraft manufacturer
recommended interval.
• Inboard
and I/O applications: Change oil
at two times the engine manufacturer recommended
interval or one year, whichever comes first.
Mixing AMSOIL
AMSOIL Formula 4-Stroke® Marine Synthetic
Motor Oil is compatible with conventional
and synthetic motor oils. Mixing AMSOIL motor
oils with other oils will, however, 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 motor 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.
