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High Point, Greensboro & Mooresville, NC

Marine Vehicles

AMSOIL synthetic lubricants are engineered to protect your watercraft in all conditions so you can remain carefree and on the water longer.
Marine Oil FAQs

Is it OK to break in new two-stroke equipment using AMSOIL synthetic motor oils?

YES. There are no problems using AMSOIL synthetic two-stroke oils for break-in periods.

Will using 100:1 mix ratios with AMSOIL Outboard 100:1 Pre-Mix Synthetic 2-Stroke Oil void warranties?

NO. Using AMSOIL Outboard 100:1 at 100:1 mix ratios, where 50:1 is recommended by the manufacturer, will not void warranties. For more information, contact AMSOIL Technical Services at (715) 399-TECH (8324) or

How often should AMSOIL Gasoline Stabilizer be used in powersports equipment?

AMSOIL Gasoline Stabilizer (AST) should be used when fuel is stored for long-term, seasonal storage. For short- to medium-term storage, AMSOIL Quickshot® (AQS) is recommended.

Can I use AMSOIL HP Marine Synthetic 2-Stroke Oil in my Evinrude® E-TEC™ at the factory-lean setting?

YES. Testing shows that HP Marine meets the stringent performance demands of Evinrude® E-TEC™ marine engines programmed for reduced oil consumption.

Will using AMSOIL synthetic oil void my boat’s warranty?

Using AMSOIL synthetic motor oil does not affect boat warranties. A federal law called the Magnuson-Moss Act (1975) prevents original equipment manufacturers from putting conditions on vehicle warranties attached to any product or service identified by brand, trade or corporate name, unless the manufacturer provides that product or service free of charge. This means consumers have the freedom to use aftermarket products of their choice without fear of losing the original limited or implied vehicle warranty.
AMSOIL Marine Applications

Fishing Boats - The anticipation and adrenaline of catching your limit is tough to beat. AMSOIL synthetic lubricants deliver the engine response and precision performance you need to stay on the fish all day.

Pleasure Boats - Protect your boat for uninterrupted fun on the water with superior protection against engine wear, rust and corrosion.

Diesel Boats - The open water is where you feel free, and where the excellent engine performance and premium protection provided by AMSOIL synthetic lubricants are essential.

Personal Watercraft - Fuel high-speed fun on the open water by keeping your personal watercraft running clean and smooth with AMSOIL synthetic lubricants.

Pontoon Boats - Cruising on the water with family and friends is always enjoyable, especially with the peace of mind that only AMSOIL synthetic lubricants can deliver.

AMSOIL Marine Products

25W-40 Synthetic Blend Marine Engine Oil
AMSOIL Synthetic Marine Gear Lube 75W-90
HP Marine Synthetic 2-Stroke Oil
SAE 15W-40 Heavy-Duty Diesel and Marine Oil
Synthetic 2-Stroke Injector Oil
Outboard 100:1 Pre-Mix Synthetic 2-Stroke Oil
AMSOIL 10W-30 Synthetic Marine Engine Oil
AMSOIL 10W-40 Synthetic Marine Engine Oil

AMSOIL Marine E-Tec Field Study

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