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Engineered for Performance and Protection

AMSOIL is a leader in synthetic lubrication solutions, offering products designed to enhance engine performance, reduce wear, and extend service life. With a reputation for quality and innovation, many AMSOIL diesel and motor oils deliver guaranteed protection for up to 25,000 miles, making them a preferred choice for those seeking reliability and efficiency.

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Stay Informed & Updated

Understanding Oil Viscosity Presentation Slide.

Understanding Oil Viscosity

12/11/2025
Viscosity is the measure of a fluid's resistance to flow. The physical properties of lubricants...

Unmatched Protection for Every Drive

AMSOIL’s advanced formulas provide unmatched protection, whether for daily use or high-performance applications. Reach out today to get access to top-tier AMSOIL products. Whether you need AMSOIL transmission fluid or accessories, we are your right choice.

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More AMSOIL® Products

Synthetic motor oil bottle, black with red cap.

AMSOIL Signature Series 5W-30 100% Synthetic Motor Oil

75% more engine protection against horsepower loss and wear.1 50% more cleaning...
Amsoil synthetic motor oil bottle, 5W-30.

AMSOIL Extended-Life 5W-30 100% Synthetic Motor Oil

37% more cleaning power1 to help keep your engine running smoother,...
AMSOIL motor oil bottle, SAE 5W-30.

AMSOIL OE 5W-30 100% Synthetic Motor Oil

Fights sludge and deposits with 100% synthetic formulation. 47% more wear...
Amsoil European motor oil bottle, SAE 5W-30.

AMSOIL 5W-30 LS 100% Synthetic European Motor Oil

Designed for the unique demands of gasoline, diesel and hybrid European...
Amsoil motor oil bottle with red cap.

AMSOIL 5W-30 100% Synthetic High-Mileage Motor Oil

Unique chemistry for vehicles with over 75,000 miles Boosted detergent and dispersant...
Amsoil synthetic-blend SAE 5W-30 motor oil.

AMSOIL 5W-30 Synthetic-Blend Motor Oil

API & ILSAC licensed Helps reduce oil consumption Provides durable protection for the...
Amsoil SAE 5W-20 synthetic motor oil bottle.

AMSOIL 5W-20 Synthetic-Blend Motor Oil

API & ILSAC licensed Helps reduce oil consumption Provides durable protection for the...
AMSOIL Dominator Racing Oil bottle.

AMSOIL DOMINATOR® 5W-20 100% Synthetic Racing Oil

Formulated specifically for racing & high-performance engines Robust formulation resists viscosity loss...
AMSOIL high mileage motor oil bottle.

AMSOIL 5W-20 100% Synthetic High-Mileage Motor Oil

Unique chemistry for vehicles with over 75,000 miles Boosted detergent and dispersant...
AMSOIL motor oil bottle, black background.

AMSOIL OE 5W-20 100% Synthetic Motor Oil

Fights sludge and deposits with 100% synthetic formulation. 47% more wear...
Amsoil synthetic motor oil bottle, SAE 5W-20.

AMSOIL Extended-Life 5W-20 100% Synthetic Motor Oil

37% more cleaning power1 to help keep your engine running smoother,...
AMSOIL synthetic motor oil bottle, black background.

AMSOIL Signature Series 5W-20 100% Synthetic Motor Oil

75% more engine protection against horsepower loss and wear.1 50% more cleaning...
Black bottle of synthetic racing oil.

AMSOIL DOMINATOR® 10W-30 100% Synthetic Racing Oil

Formulated specifically for racing & high-performance engines Robust formulation resists viscosity loss...
AMSOIL Z-ROD motor oil bottle.

AMSOIL Z-ROD® 10W-30 100% Synthetic Motor Oil

Engineered for classic vehicles Helps retain horsepower High-zinc formula protects flat-tappet cams, lifters,...
Amsoil motor oil bottle with blue cap.

AMSOIL 10W-30 100% Synthetic High-Mileage Motor Oil

Unique chemistry for vehicles with over 75,000 miles Boosted detergent and dispersant...
AMSOIL synthetic motor oil bottle, SAE 10W-30.

AMSOIL OE 10W-30 100% Synthetic Motor Oil

Fights sludge and deposits with 100% synthetic formulation. 47% more wear...
Amsoil motor oil bottle, 10W-30.

AMSOIL Extended-Life 10W-30 100% Synthetic Motor Oil

37% more cleaning power1 to help keep your engine running smoother,...
AMSOIL synthetic motor oil bottle, black background.

AMSOIL Signature Series 10W-30 100% Synthetic Motor Oil

A New Level of Motor Oil Technology 75% more engine...
Amsoil SAE 0W-20 synthetic motor oil.

AMSOIL 0W-20 Synthetic-Blend Motor Oil

API & ILSAC licensed Helps reduce oil consumption Provides durable protection for the...
AMSOIL synthetic hybrid motor oil bottle.

AMSOIL 0W-20 100% Synthetic Hybrid Motor Oil

Specially formulated for hybrid engines Superior sludge and deposit control Maximizes fuel economy...
AMSOIL high mileage synthetic motor oil bottle.

AMSOIL 0W-20 100% Synthetic High-Mileage Motor Oil

Unique chemistry for vehicles with over 75,000 miles Boosted detergent and dispersant...