Best Oil Motor Oils in 2026

Provides maximum protection against excessive wear, corrosion and pitting for extended gear life in marine applications

Contains additives to protect gears if water enters the gearcase or lower unit

Recommended for use in outboard motor gearcases and marine lower units in applications below 75hp

Lower unit gear oil formulated to protect against corrosion and excessive wear

Designed for outboard motor lower unit and sterndrive applications above 75 HP

Extreme pressure synthetic additives protect gears from metal to metal contact

Designed for use with all 4-stroke marine outboard motors and inboard and sterndrive engines

Formulated to protect marine engines against corrosion and excessive wear

Offers outstanding shear strength, viscosity retention and corrosion resistance

For use in oil-injected, carbureted or electronic fuel injected (EFI) mid- to high-horsepower engines

Provide outstanding wear and corrosion protection which help extend engine life

Minimize performance-robbing carbon deposits

Designed for outboard and sterndrive racing application.

Also for use in high‑performance gearcases used in marine, powersports, and motorsports applications.

Provides maximum protection against wear.Its tackifiers and pressure additives improve oil film adhesion and protect against excessive wear.

Everything you need for an oil change on all 40hp through 60hp Mercury outboards in one box

Kit includes (3) 1L bottles of Quicksilver 25W-40 4-Stroke Marine Engine Oil, Quicksilver premium oil filter, drain plug seal and drip tray

Quicksilver 4-Stroke Marine Engine Oil is formulated with advanced corrosion inhibitors and provides outstanding lubricity to reduce wear, scuffing and scoring for improved long-term engine reliability

PERFORMANCE - Full Synthetic, Outstanding detergency keeps engine clean of deposits and rings free, to maintain ultimate power and performance

PROTECTION - Provides outstanding wear and corrosion protection to help engine life

PEACE OF MIND - Inherently biodegradable, clean burning full synthetic provides low smoke and smell

Heavy, sticky, spray lubricant forms a protective barrier to prevent rust on the engine's internal metal surfaces.

Keeps cylinders lubricated to prevent cylinder or piston damage when starting the engine after off-season storage.

Use to "winterize" (off season storage) all engines; outboards, sterndrives, cars, trucks, ATV/UTV's, motorcycles, snowmobiles, lawn mowers, chainsaws, leaf blowers, hedge trimmers

Everything you need for an oil change on all 70hp through 115hp Mercury 2.1L outboards in one box

Kit includes (5) 1L bottles of Quicksilver 10W-30 4-Stroke Marine Engine Oil, Quicksilver premium oil filter, and oil drain hose

Quicksilver 4-Stroke Marine Engine Oil is formulated with advanced corrosion inhibitors and provides outstanding lubricity to reduce wear, scuffing and scoring for improved long-term engine reliability

Everything you need for an oil change on all Yamaha F225 through F300 outboards in one box

Kit includes (7) 1L bottles of Quicksilver 10W-30 4-Stroke Marine Engine Oil, Quicksilver premium oil filter, drain plug seal and funnel

Quicksilver 4-Stroke Marine Engine Oil is formulated with advanced corrosion inhibitors and provides outstanding lubricity to reduce wear, scuffing and scoring for improved long-term engine reliability

Everything you need for an oil change on all 75hp, 90hp and 115hp Mercury 1.7L outboards in one box

Kit includes (5) 1L bottles of Quicksilver 25W-40 4-Stroke Marine Engine Oil, Quicksilver premium oil filter and drain plug seal

Quicksilver 4-Stroke Marine Engine Oil is formulated with advanced corrosion inhibitors and provides outstanding lubricity to reduce wear, scuffing and scoring for improved long-term engine reliability

Everything you need for an oil change on all 150hp Mercury and Mariner outboards in one box

Kit includes (5) 1L bottles of Quicksilver 10W-30 4-stroke Marine Engine Oil, Quicksilver premium oil filter, drain plug seal and drip tray

Quicksilver 4-Stroke Marine Engine Oil is formulated with advanced corrosion inhibitors and provides outstanding lubricity to reduce wear, scuffing and scoring for improved long-term engine reliability

Quicksilver Brand Synthetic Blend SAE 25W50

Recommended for Mercury Verado and other high performance marine engines.

Provides outstanding wear and corrosion protection to help extend engine life

PERFORMANCE – Protects all motorcycle fork applications

PROTECTION – Provides protection to seals by preventing stiction and drag

PEACE OF MIND – Meets or exceeds manufacturer’s warranty requirements

PERFORMANCE – Used in shaft drive or separate clutch transmissions for optimum performance and gear longevity

PROTECTION – Provides maximum gear protection against wear, corrosion, and oxidation all while maintaining optimum performance

PEACE OF MIND – Meets or exceeds API GL-5 / MT-1 & SAE J236

Everything you need for an oil change on all Yamaha F150 outboards in one box

Kit includes (5) 1L bottles of Quicksilver 10W-30 4-Stroke Marine Engine Oil, Quicksilver premium oil filter, drain plug seal and funnel

Quicksilver 4-Stroke Marine Engine Oil is formulated with advanced corrosion inhibitors and provides outstanding lubricity to reduce wear, scuffing and scoring for improved long-term engine reliability

Everything you need for an oil change on all Yamaha F75 through F115 outboards in one box

Kit includes (4) 1L bottles of Quicksilver 10W-30 4-Stroke Marine Engine Oil, Quicksilver premium oil filter, drain plug seal and funnel

Quicksilver 4-Stroke Marine Engine Oil is formulated with advanced corrosion inhibitors and provides outstanding lubricity to reduce wear, scuffing and scoring for improved long-term engine reliability