Engine oils

Engine oils in Australia

Updated 4 November 2026

Engine oil in Australia costs roughly A$41 to A$75 for a 5 L pack from common brands, while premium full-synthetic oils reach about A$140. The quickest way to get current prices for your car, viscosity and quantity is a request on BlaBlaPrice.

Warranty and approvals

Australian guidance says there is no legal requirement to have a car serviced by an authorised dealer to keep the manufacturer's warranty. What can cost you the warranty is the wrong oil: a non-specified oil that causes engine damage can let the manufacturer refuse cover for that damage. Check the viscosity and approval in your owner's manual, and keep the receipt for every oil change so you can show what you used.

Season and temperature

November is late spring, and the heat builds through December to February, when engines work hardest on hot days in Sydney, Brisbane and Perth. Winter, from June to August, brings cold starts in Melbourne and Adelaide, where a lower first number such as 5W flows more easily when the engine is cold. Plan an oil change before the summer heat, and check the oil level again before the cold mornings of winter.

Litres, delivery and how prices are quoted

Oil is sold in litres: 5 L and 7 L packs are the usual sizes for cars, and 20 L is the trade size. Ask whether a quoted price includes delivery to Sydney, Melbourne, Brisbane, Perth or Adelaide, because a 20 L drum is heavy and freight adds to the price quickly.

What to write in your request

Give the viscosity (for example 5W-30), your car's make, model and year, the approval your manual asks for, the base oil type (mineral, blend or full synthetic), a brand if you have one, the quantity in litres, the delivery city and your budget in A$.

BlaBlaPrice is free for buyers. You describe what you need in the chat, and the AI asks for missing details such as the viscosity, then looks through sellers' websites and price lists in your country and shows the prices and businesses it found. Registered sellers reply with their own offer, price and terms, and your contacts stay hidden until you choose. Related products are in Oils and car chemicals and Car care and car chemicals.