Amsoil Synthetic 4-Stroke Oils

Amsoil 25W-40 Synthetic Blend Marine Engine Oil (WCM)
Amsoil 25W-40 Synthetic Blend Marine Engine Oil (WCM)

Amsoil 25W-40 Synthetic Blend Marine Engine Oil when engine performance and reliability are key to a successful day fishing or boating. High-rpm operation and constant exposure to water, however, invite engine wear and formation of rust and corrosion, reducing engine performance and life. Amsoil 25W-40 Synthetic Blend Marine Engine Oil guards against wear while delivering excellent protection against rust and corrosion. It is Warranty Secure® and will not void your marine engine’s warranty.

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Amsoil 10W-40 Synthetic Marine Engine Oil (WCF)
Amsoil 10W-40 Synthetic Marine Engine Oil (WCF)

Amsoil 10W-40 Synthetic Marine Engine Oil is for use in 4-stroke gasoline fueled engines in marine applications. Offers unsurpassed wear protection, viscosity stability, low volatility and excellent rust protection. NMMA FC-W approved and “warranty certified”. For use in 4-stroke outboard and marine inboard engines. Also excellent for personal watercraft.

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Amsoil 10W-30 Synthetic Marine Engine Oil (WCT)
Amsoil 10W-30 Synthetic Marine Engine Oil (WCT)

Amsoil 10W-30 Synthetic Marine Engine Oil is for use in 4-stroke gasoline fueled engines in marine applications. Offers unsurpassed wear protection, viscosity stability, low volatility and excellent rust protection. NMMA FC-W approved and "warranty certified". For use in 4-stroke outboard and marine inboard engines. Also excellent for personal watercraft.

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Amsoil 4-Stroke 5W-50 Synthetic ATV/UTV Engine Oil (AUV50)
Amsoil 4-Stroke 5W-50 Synthetic ATV/UTV Engine Oil (AUV50)

Amsoil 5W-50 Synthetic ATV/UTV Engine Oil is formulated to deliver upgraded performance for hard-working and performance ATVs and UTVs. Its outstanding severe-service formulation allows riders to confidently and safely push their machines to the limit, whether tackling tough chores around their property or riding aggressively on the trail.

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Amsoil 10W-40 Synthetic ATV/UTV Engine Oil (AUV40)
Amsoil 10W-40 Synthetic ATV/UTV Engine Oil (AUV40)

Amsoil 10W-40 Synthetic ATV/UTV Engine Oil is formulated to deliver upgraded performance for hard-working and performance ATVs and UTVs. Its outstanding severe-service formulation allows riders to confidently and safely push their machines to the limit, whether tackling tough chores around their property or riding aggressively on the trail.

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Amsoil 10W-60 Synthetic Dirt Bike Oil (DB60)
Amsoil 10W-60 Synthetic Dirt Bike Oil (DB60)

Amsoil 10W-60 Synthetic Dirt Bike Oil is engineered to deliver the performance attributes most requested by on- and off-track dirt bike riders, including consistent clutch feel. Consistent clutch feel is the result of “friction durability,” so whether deep into a race or deep in the woods, riders can feel confident their clutch will perform from start to finish. AMSOIL-exclusive advanced chemistry provides outstanding engine reliability for worry-free operation under severe conditions.

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Amsoil 10W-50 Synthetic Dirt Bike Oil (DB50)
Amsoil 10W-50 Synthetic Dirt Bike Oil (DB50)

Amsoil 10W-50 Synthetic Dirt Bike Oil is engineered to deliver the performance attributes most requested by on- and off-track dirt bike riders, including consistent clutch feel. Consistent clutch feel is the result of “friction durability,” so whether deep into a race or deep in the woods, riders can feel confident their clutch will perform from start to finish. AMSOIL-exclusive advanced chemistry provides outstanding engine reliability for worry-free operation under severe conditions.

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Amsoil 10W-40 Synthetic Dirt Bike Oil (DB40)
Amsoil 10W-40 Synthetic Dirt Bike Oil (DB40)

Amsoil 10W-40 Synthetic Dirt Bike Oil is engineered to deliver the performance attributes most requested by on- and off-track dirt bike riders, including consistent clutch feel. Consistent clutch feel is the result of “friction durability,” so whether deep into a race or deep in the woods, riders can feel confident their clutch will perform from start to finish. Amsoil-exclusive advanced chemistry provides outstanding engine reliability for worry-free operation under severe conditions.

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Amsoil 10W-40 Synthetic Small Engine Oil (ASF)
Amsoil 10W-40 Synthetic Small Engine Oil (ASF)

Amsoil 10W-40 Synthetic Small Engine Oil is formulated to outperform passenger-car/light-truck oils, Amsoil Synthetic Small-Engine Oil protects against wear, deposits and oil consumption in over-worked, under-maintained small engines professionals rely on to make a living.

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Amsoil 4-Stroke 10W-30 Synthetic Small Engine Oil (ASE)
Amsoil 4-Stroke 10W-30 Synthetic Small Engine Oil (ASE)

AMSOIL 10W-30 Synthetic Small Engine Oil is formulated to outperform passenger-car/light-truck oils, AMSOIL Synthetic Small-Engine Oil protects against wear, deposits and oil consumption in over-worked, under-maintained small engines professionals rely on to make a living.

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