30A Maroondah Highway, Ringwood 3134. 30A Maroondah Highway, Ringwood 3134. 
Engine oil protects moving parts, reduces friction and helps carry heat away from key components. So, when it comes time for a service, the oil you choose matters.
Synthetic oil is used in many modern vehicles because it can handle heat and cold starts well. It also holds up better under demanding driving conditions. But that doesn’t mean it's right for every car. It still needs to match the correct grade, viscosity and manufacturer’s specifications for your engine.
In this guide, we’ll explain the benefits of synthetic oil, how it works, how it compares to conventional oil and how to know if it’s right for your vehicle.
Synthetic oil is engine oil made from highly refined or chemically engineered base oils. Additives are then included to help protect the engine and keep the oil stable while the car is running.
Like any engine oil, synthetic oil works by creating a thin lubricating film between moving engine parts. This helps reduce metal-on-metal contact inside the engine. It also helps carry heat away from critical components and keeps the engine operating cleanly by resisting sludge and deposit build-up.
The advantage of synthetic oil is consistency. It’s designed to flow well when cold and remain stable when hot, which makes it useful across different driving conditions.
The main benefits of synthetic oil come from how well it holds up inside the engine. It can offer strong protection, cleaner operation and better performance in hot or cold conditions. The key is using the correct oil grade and specification for your vehicle, not just choosing something because it says synthetic on the bottle.
Synthetic oil can provide strong lubrication between moving engine parts, helping reduce friction during everyday driving. It’s especially useful during cold starts and short trips, when the engine needs the oil to circulate quickly.
Synthetic oil is designed to handle temperature changes better than conventional oil. It can flow more easily in cold conditions and stay stable in high heat. That’s particularly important in Australia, where hot weather, long drives, towing or heavy traffic can all put extra heat into the engine.
Because synthetic oil can reduce friction between parts, it may help limit engine wear over time. That doesn’t mean it prevents all wear. You still need to service your vehicle regularly to make sure it's properly looked after.
Synthetic oil is more resistant to breaking down, which can help reduce deposits inside the engine. Cleaner oil performance is especially helpful for cars that do short trips or spend a lot of time in traffic. It still needs changing, though, as it will collect contaminants as the engine runs.
Most synthetic oils are designed to last longer than conventional oils, which can result in longer oil change intervals. That doesn’t mean you should delay servicing your vehicle. Your logbook or owner’s manual should still guide when you need to change the oil.
Synthetic oil may help fuel efficiency by reducing internal friction inside the engine. That being said, it’s usually not a huge difference on its own, as your fuel use also depends on how you drive, the condition of your engine and whether the car has been serviced properly.
The main difference between synthetic oil vs conventional oil is how the oil is made. Conventional oil comes from crude oil and is refined for use in engines. Synthetic oil is made using highly refined or chemically engineered base oils. These are processed to create more consistent molecules, which helps the oil stay stable under heat, flow well when cold and resist breaking down inside the engine.
Conventional oil can still be suitable for some older or lower-demand vehicles. Synthetic oil is often recommended or required for newer engines, especially where the manufacturer has set a specific oil standard. The best oil is always the one that matches your vehicle's specific requirements.
Some people are sceptical about synthetic oil because of advice they’ve heard years ago. Many of those ideas are outdated now, as synthetic oil is commonly used in modern cars and often recommended by vehicle manufacturers.
Synthetic oil doesn’t cause leaks in a healthy engine. In older engines, worn seals or gasket issues may become more noticeable after an oil change. If that happens, the leak should be inspected rather than blaming the oil straight away.
Synthetic oil isn’t just for sports cars. Many everyday vehicles now use synthetic oil because their engines are built for specific oil standards. This is common in a lot of modern cars, including European vehicles.
Many vehicles can switch from conventional oil to synthetic oil, as long as it meets the correct grade and manufacturer’s specifications. Don’t switch just because the label looks good. Check the owner’s manual or speak to a mechanic first.
Synthetic oil still needs to be changed. It might last longer in some engines, but it still breaks down and becomes contaminated over time. Make sure you change your oil regularly and always follow the service interval for your vehicle.
The right engine oil depends on your vehicle, engine type, mileage and service history. Driving conditions have an effect too.
You shouldn’t choose oil based only on price, brand or the word synthetic. The oil needs to match the correct grade, viscosity and approval listed for your car.
This is especially important for European vehicles, where the wrong oil can cause problems over time. Many Audi, BMW, Mercedes, Volkswagen and Skoda engines have specific oil requirements, so it pays to get it right.
At Ringwood Autohaus, we can confirm the correct oil during your next service and make sure your vehicle gets what the manufacturer requires.
You should use synthetic oil when your vehicle manufacturer recommends or requires it. It may also be worth using if your car regularly deals with cold starts, hot weather, stop-start traffic, towing or longer highway drives.
Yes, using the wrong engine oil can cause problems over time. The wrong grade or specification may affect lubrication and engine protection.
No. Full synthetic oil uses synthetic base oils, while synthetic blend oil mixes synthetic and conventional oils. Your owner’s manual or mechanic can confirm which type your vehicle needs.
Yes, synthetic oil usually costs more than conventional oil. However, synthetic oil may last longer in some engines and offer better protection between services.
Older cars can use synthetic oil, as long as it suits the engine and the manufacturer’s requirements. However, if the engine has worn seals or heavy sludge build-up, switching oil type might make existing issues more noticeable.
Check your owner’s manual or logbook for the correct oil grade and specification. If you’re unsure, we can confirm the right oil during your next service.
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