LPG liquid petroleum gas usually only runs in petrol cars that have been modified to take this fuel type, but even in these it is recommended that the car be run on petrol every so often to keep various components lubricated. Also, automotive LPG sales have been declining over the past decade and now account for just two per cent of total automotive fuels sold in Australia. Really, this only comes into play in high-performance and some newer engines, all of which will be specified in the vehicle manual.
E10 ethanol fuels also have some advantages, and not least of which in your wallet, as they often tend to be a cheaper option. They are a part of a push away from fossil fuels, the ethanol can be produced locally — easing our reliance on imported fuel sources — and they can potentially slightly reduce your cars CO2 emissions. This fuel does contain slightly less energy than regular unleaded, which can reduce your range from a tank, and it is definitely a good idea to check whether your car is compatible to take E10 here.
These premium options contain different additives depending on which brand you choose, but most are formulated to reduce foaming at the pump, run cleaner in your system and reduce the amount of black soot emitted by your exhaust.
Some reports also credit premium diesel options with better mileage, but these reports are currently only anecdotal. In this instance drive until the tank is empty and then fill up with your recommended fuel.
Car Tyre Brand Reviews. Below is a list of some of the most consistently popular cars on Australian roads, with a guide of what type of fuel to use. Note that the fuel recommended is a minimum standard, and many performance versions of these particular models probably require higher octane fuel. The advent of small, economical turbocharged vehicles has also seen the rise of premium fuel use.
However, you should be aware there are many different specifications within a model range, so your particular car may require a different kind of petrol. Also be wary that many of these models also come in diesel, so fill up with the right fuel!
Many modern vehicles can run or E10 or 91 with no serious ill effect. A full list of cars can be found here.
Often putting in a lower-quality fuel can hamper acceleration and fuel economy, so you may pay for your choice in other ways. This is especially true for performance-oriented cars. Happy motoring! Which petrol should I use? Share this article. Uber to launch carpool feature in Australia March 29th Important Information.
LPG excises have now been imposed and prices have also risen sharply, dramatically offsetting the cost-effectiveness of running LPG. Another nail in the coffin of LPG is that it is difficult to impossible to source in country areas, with many suburban stations removing pumps due to low demand. LPG is now largely relegated to taxi use and older existing conversions. The 'premium' varieties offer some advantages over regular unleaded, the main one being an enhanced additive package.
According to the refineries, they are said to remove deposits in the fuel system and keep it clean, thus maintaining a proper fuel injector spray pattern. These additives also help reduce carbon build-up within the combustion chamber. This benefit can result in the fuel economy of a particular vehicle being maintained over its life.
Sadly, these additives don't actually increase the power of your engine, despite what the oil company marketing teams might suggest. Premium fuels, especially petrol, are only necessary if your vehicle requires them. Most European vehicles require premium 95 at a minimum, while most Japanese makes and locally produced cars only need 91 regular unleaded.
Fuelling up with a higher grade of fuel than your car requires is a waste of money. For premium diesel, the main additive is a defoamant, so you can fill the tank faster without it frothing all over the place like a rabid animal. Beyond that, premium diesel also has cleaning and anti-corrosion additives. Most modern petrol cars can burn a 10 per cent ethanol-blended fuel. It's often sold as premium 95 with ethanol, or something similar. Check the owner's handbook, as the ethanol can degrade fuel components over time.
E10 is generally cheaper than unblended premium 95, but the fuel economy is usually up to seven per cent worse. There are also conflicting reports that it is no better for the environment than unblended fuels. E85 is a special 85 per cent ethanol fuel found at certain United fuel stations. It can only be used in flex-fuel cars, but often finds its way into the tanks of highly modified cars or race cars.
The E85 pump is coloured purple. Putting this fuel in a regular car may cause damage to the fuel system due to the high ethanol content, but the car probably won't run at all since it is much less volatile than pure petrol.
Tuning a vehicle on E85 allows for massive power outputs, with a reduction in engine heat and component stress, making it an excellent choice for race cars.
The fuel itself already has oxygen in it that is liberated when burned, unlike pure petrol. This is why we see the huge power increases when tuning with ethanol fuels. E85 has a RON, or octane number, of over They were created to reduce reliance on fossil fuels by running largely on a renewable source, and they drive like any other vehicle. It should be noted that because these vehicles still run on a high percentage of ethanol, expect fuel economy to be worse than straight petrol.
Octane refers to a molecule with eight carbon atoms. The higher the octane rating, the slower, cooler, and more controlled the burn is, reducing knock. Regular 91 unleaded is 91 per cent octane and premium 95 unleaded is 95 per cent octane, for example.
The higher the RON figure, the more the fuel will resist knocking. E85 is over per cent RON. This is a little misleading, since the fuel is mostly alcohol.
It resists knocking more than pure octane because a lot of water vapour is formed when alcohol is burned. In contrast, octane releases no water vapour, since there are no oxygen atoms in it! The water vapour helps to draw heat away and cool the combustion chamber, hence why car tuners love the E85 stuff. It also has a heavenly sweet smell when burned.
Back in the days before , a leaded compound was added to higher-grade petrol to reduce knock. This was before petrol was marketed with RON numbers. Those days, it was called super instead of 91 or The compound was highly toxic tetraethyl lead.
It is amazing at reducing knock, especially in piston aircraft and race cars. Unfortunately, some of the best stuff is also the most toxic, like asbestos. Due to the toxicity and that lead and other heavy metals are catalyst poisons, it was banned from when the catalytic converter was introduced into Australia. Leaded aviation fuel is common, but the car race fuel is currently being phased out. Knock is bad Really bad. It's caused when the fuel explodes in the combustion chamber before the spark plug has fired.
Within milliseconds after the fuel has exploded by itself, the spark plug fires.
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