Lubricant Technology
High-Zinc Engine Oil: What Is ZDDP and Does Your Engine Need It?
Learn what ZDDP is, why high-zinc motor oil matters for flat-tappet and classic engines, and when a high-zinc oil is — and isn't — the right choice.
AMSOIL Knowledge Centre
Technical Knowledge That Goes Beyond the Bottle
Explore lubricant technology, product information, industry standards, application advice and updates from AMSOIL Australia. Whether you are choosing the correct oil specification, comparing lubricant types or looking for the latest product news, the AMSOIL Knowledge Centre brings together practical information in one place.
FEATURED TECHNICAL GUIDE
Understanding Engine Oil Standards
API, ILSAC and ACEA specifications define important performance requirements for modern engine oils, but understanding what the letters and numbers actually mean isn't always straightforward. Explore our guide to current and historical oil standards, backwards compatibility and choosing the correct specification for your vehicle.
Explore Oil Standards →API
ILSAC
ACEA
Latest from the Knowledge Centre
Engine Oil
Why Buy Signature Series?
Discover what sets AMSOIL Signature Series apart and how its advanced synthetic formulation provides exceptional protection for demanding engines.
Lubricant Technology
What Does “Stay-in-Grade” Oil Mean?
Learn what “stay-in-grade” means, how engine oil can lose viscosity through mechanical shear and why shear stability is an important requirement of ACEA oil classifications.
Gear & Transmission
API GL-4 and You
Learn what the API GL-4 specification means, where GL-4 gear oils are used and why the correct specification matters.
Diesel
Amsoil DP530 5W-30 Diesel Engine OIl
Discover AMSOIL DP530 5W-30 and the protection it provides for modern diesel engines operating under demanding conditions.
Additives
AMSOIL Fuel Additives
Explore the AMSOIL fuel additive range and learn how different formulations help clean, protect and maintain petrol and diesel fuel systems.
