AMSOIL Synthetic Marine Gear Lube 75W-90 | API GL-4, GL-5
High-Performance Gear Lube for Marine Applications
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, and protects against shock loading from cavitation of heavily loaded engines.
AMSOIL Synthetic Marine Gear Lube delivers advanced outboard protection against power loss and gear wear, even with up to 15% water contamination. It promotes long seal life to help prevent water contamination and is designed to prevent rust — and is compatible with aluminum, copper and brass alloys.
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Independent AMSOIL Dealer #1858536
Extreme-Pressure Performance — Even With 15% Water
Marine gear oils operate in environments subject to water contamination. The Falex Procedure is a measurement of a gear lube’s extreme-pressure and anti-wear properties.
| Test | AMSOIL Synthetic Marine Gear Lube |
|---|---|
| FALEX Extreme-Pressure Load Test B (ASTM D3233B), no water | 2000 lbF |
| FALEX Extreme-Pressure Load Test B (ASTM D3233B), with 15% water | 2000 lbF |
| Foam Stability (ASTM D892) Sequence I — new / water-contaminated | 0/0 |
| Foam Stability (ASTM D892) Sequence II — new / water-contaminated | 0/0 |
| Foam Stability (ASTM D892) Sequence III — new / water-contaminated | 0/0 |
AMSOIL Synthetic Marine Gear Lube is highly resistant to the effects of water contamination and shows zero foam in both new and water-contaminated industry-standard testing.
Service Life
Follow the manufacturer-recommended service interval. It is generally a good idea to change gear lube at the end of a season prior to storage.
AMSOIL Synthetic Marine Gear Lube is compatible with other commercially available conventional and synthetic marine gear lubes.
Applications
Use in fresh- and saltwater applications that require 75W-90 or 80W-90 gear lube, including:
Lower units: Mercury/Mariner, Johnson/Evinrude, Bombardier, Honda, Yamaha, Suzuki, Force/US Marine, Nissan, Tohatsu, Harbormaster Sterndrives: Mercruiser-Bravo, OMC/Bombardier, Volvo-Penta, Yanmar, Konrad, Marine Drive Systems V-drives: Casale, Menkins Bow thrusters: Harbormaster Marine Transmissions: ZF Marine Transmission
Service categories: API GL-4, GL-5
Order AMSOIL Synthetic Marine Gear Lube
Protect your outboard, sterndrive or marine transmission with water-contamination-resistant synthetic gear lube.
Shop Marine Gear Lube at AMSOIL.com Independent AMSOIL Dealer #1858536
For wholesale pricing, contact National Synthetics about the Preferred Customer program and save up to 25% on all AMSOIL products.
Frequently Asked Questions
Warranty Secure
AMSOIL Synthetic Marine Gear Lube is Warranty Secure, keeping your factory warranty intact. It is a high-performance replacement for manufacturer-branded products and is backed by the AMSOIL Limited Warranty. For complete information visit AMSOIL.com/guarantee.
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