AMSOIL Synthetic Marine Gear Lube is an exclusive AMSOIL formulation
of synthetic base oils and high-performance additives that addresses
the specific concerns of marine applications. It is fortified with extreme-pressure
(EP) additives for superior protection of fast-accelerating,
high-torque/horsepower engines. It protects against shock loading from
cavitation of heavily loaded engines.
AMSOIL Synthetic Marine Gear Lube is water resistant. It maintains
extreme-pressure protection even when contaminated with as much
as 10 percent water. It promotes longer seal life to help prevent water
contamination**. AMSOIL Synthetic Marine Gear Lube is designed to
prevent rust and is compatible with aluminum, copper and brass alloys.

Marine gear oils operate in environments subject to water contamination. The chart
above demonstrates the ability of AMSOIL Synthetic Marine Gear Lube to maintain
designed qualities such as extreme-pressure/anti-wear performance and resistance
to foaming, even when subjected to 10 percent water contamination**.
The Falex Procedure is a measurement of a gear lube's extreme-pressure and
anti-wear properties. A high value in the Falex Extreme-Pressure Test relates to extra
extreme-pressure protection. AMSOIL Synthetic Marine Gear Lube provides extreme-pressure
protection and is highly resistant to the effects of water contamination.
The presence of foam in a lubricant disrupts the oil film and promotes wear. Water
contamination can increase the likelihood of foaming. Industry-standard testing
demonstrates zero foam in both new and water-contaminated AMSOIL Synthetic
Marine Gear Lube.
- Excellent gear and bearing protection, even when contaminated with 15% water**
- Reduced friction and wear
- Protection against rust and corrosion
- Long seal life
- Superior foam prevention
APPLICATIONS
Use in fresh- and saltwater applications that require 75W-90 or
80W-90 gear lube and any of the specifications listed below,
including lower units made by Mercury/Mariner*, Johnson/Evinrude*, Bombardier*, Honda*, Yamaha*, Suzuki*, Force/US Marine*, Nissan*, Tohatsu* and Harbormaster*; sterndrives
made by Mercruiser-Bravo*, OMC/Bombardier, Volvo-Penta*,
Yanmar*, Konrad* and Marine Drive Systems*; V-drives made
by Casale & Menkins*; bow thrusters made by Harbormaster
Marine*; and transmissions made by ZF Marine Transmission*.
• API GL-4, GL-5
COMPATIBILITY
AMSOIL Synthetic Marine Gear Lube is compatible with other
commercially available conventional and synthetic marine gear
lubes.
Follow manufacturers' recommended
service intervals.
It is generally a good idea
to change gear lube at the end of a season
prior to storage.
WARRANTY SECURE
AMSOIL Synthetic Marine Gear Lube is Warranty Secure, keeping your factory warranty intact. AMSOIL Synthetic Marine Gear Lube is a high-performance replacement for manufacturer-branded products and is also backed by the AMSOIL Limited Warranty.
For details, visit www.amsoil.com/warrantysecure

HEALTH & SAFETY
This product is not expected to cause health concerns when
used for the intended application and according to the recommendations
in the Safety Data Sheet (SDS). An SDS is available via the Internet at www.amsoil.com or upon request at
(715) 392-7101. Keep Out of Reach of Children. Recycle
used oil and bottle.
* All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by
their use. All products advertised here are AMSOIL-engineered for use in the applications shown.
**Based upon AMSOIL testing of AMSOIL Synthetic Marine Gear Lube 75W-90 in ASTM 3233 and ASTM D892.