AMSOIL Signature Series Synthetic Engine Oil Australia

AMSOIL Signature Series synthetic engine oils deliver premium protection and performance for petrol engines, with exceptional resistance to wear, deposits and oil breakdown.

AMSOIL Signature Series Synthetic Motor Oil represents AMSOIL's premium petrol engine oil range, engineered to provide exceptional protection in demanding operating conditions. Advanced synthetic formulations provide outstanding wear protection, resist deposits and oil breakdown, and maintain dependable performance across extreme temperatures.

Browse the AMSOIL Signature Series engine oil range below, or use the AMSOIL Vehicle Product Finder to identify the correct viscosity and specifications for your vehicle.

8 Products Found

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Signature Series 0W-16 Engine Oil AZS

From $59.95

Signature Series 0W-20 Engine Oil ASM

From $59.95

Signature Series 0W-30 Engine Oil AZO

From $59.95

Signature Series 0W-40 Engine Oil AZF

From $59.95

Signature Series 10W-30 Engine Oil ATM

From $59.95

Signature Series 5W-20 Engine Oil ALM

From $59.95

Signature Series 5W-30 Engine Oil ASL

From $59.95

Signature Series 5W-50 Engine Oil AMR

From $59.95

AMSOIL Signature Series Synthetic Motor Oil

Signature Series represents AMSOIL's premium synthetic petrol engine oil range, engineered for motorists seeking maximum protection and performance from their lubricant. Its advanced synthetic formulation is designed to protect critical engine components under demanding operating conditions while resisting heat, deposits, oxidation and viscosity breakdown.

Designed to Maintain Protection

Engine oil is subjected to heat, combustion contaminants and mechanical shear every time an engine operates. Over time these stresses can degrade the lubricant and reduce its ability to provide consistent protection. Signature Series is formulated to maintain its protective properties throughout demanding service and help keep engines clean.

Viscosity stability is particularly important in areas of the engine exposed to intense mechanical forces. Our stay-in-grade oil guide explains mechanical shear, permanent viscosity loss and why maintaining the intended viscosity grade matters for engine protection.

Why Choose Signature Series?

Signature Series is positioned above AMSOIL OE and Extended Life engine oils for drivers seeking AMSOIL's highest level of synthetic engine-oil performance. It is available in multiple viscosity grades and specifications for a wide range of petrol-engine applications.

For a closer look at the technology, performance objectives and differences that distinguish the range, read Why Buy AMSOIL Signature Series?

Proven Through Severe Engine Testing

Performance claims are only meaningful when the oil can maintain protection under severe operating conditions. Signature Series is subjected to demanding industry engine tests designed to evaluate areas such as oxidation resistance, deposit control and viscosity retention under sustained high-temperature operation.

See how Signature Series performs in one of these severe tests in our guide: AMSOIL Signature Series and the Sequence IIIH Engine Test.

Check Your Vehicle Requirements

Always select an engine oil with the viscosity and performance specifications appropriate for the vehicle. You can learn more about API, ILSAC and ACEA classifications in the AMSOIL Oil Standards Guide, or use the AMSOIL Vehicle Product Finder to find suitable AMSOIL products for your vehicle.