Frequently Asked Questions
If you have questions about the use of LPG in your vehicle, below you will find answers to the most common questions.
Autogas, or LPG, is a co-product of natural gas and petroleum, occurring naturally during domestic oil refining and natural gas processing. It is 270 times more compact as a liquid than as a gas, making it highly economical to store and transport. When used as an on-road engine fuel, LPG is called autogas.
Yes. In several countries car manufacturers offer a range of cars that run on LPG.
There are a variety of different kit and tank types that will suit most makes and models of vehicles. To find out if your car is suitable, contact a Licensed Installer.
The LPG Autogas systems in today’s modern vehicle are designed to be very safe. They are safe in use, safe to repair and safe in a vehicle accident situation. An Autogas system has a number of important safety features including:
- A welded steel pressure cylinder which is stress-tested to many times its normal operating pressure prior to being installed.
- Two electronically controlled shut-off solenoids (on cylinder and under bonnet) which stop the flow of gas to the engine if the engine stops for any reason.
- Pressure relief valves, for the tank and the system, to prevent any pressure build up that may damage the system or be hazardous.
- Double back-check valves to ensure gas tight filling.
- Sealed compartments and venting around valves and pipe-work to ensure no LPG enters the interior of the vehicle.
LPG is one of the most environmentally friendly automotive fuels around, offering a tremendous advantage in towns and cities where pollution is a problem. With an increasing need to protect the world we live in, it’s good news to find that Autogas offers an option to help reduce harmful emissions.
Tests have shown that Autogas emits:
- 10-12% less CO2 than petrol
- 53% less NOx than petrol
- 120 times less small particle emissions than diesel
Not at all. If you can fill a car with gasoline, you can fill an autogas-powered vehicle. It’s essentially the same process.
It can be. There are two different grades or blends of LPG and they are not interchangeable. LPG Autogas that is a mixture of Propane and Butane is for automotive use only.
In most countries, your vehicle warranty is not voided by the installation of an LPG system. However, the vehicle manufacturer will not warrant the LPG system (unless fitted or endorsed by them) and the manufacturer may not warrant anything that is affected by having the LPG system fitted or running the vehicle on LPG. These items are covered by the LPG system supplier and installer. Extended warranty products are also available to cover the vehicle for longer periods. Please check with your installer for your warranty options.
The LPG tank and fuel pipes are fitted with numerous safety devices. The gas flow will automatically stop if the pipes are damaged or the engine is not running. If the vehicle catches fire, the gas tank pressure is controlled via safely venting excess pressure which will prevent the tank from rupturing and causing further damage. Tanks are made of thick steel.
Commonly, Autogas is utilised as part of a dual-fuel system with petrol. Vehicles are fitted with both petrol and LPG tanks. The great benefit of a dual fuel system is that when an Autogas filling station is not available, you can switch your vehicle back to petrol at the click of a button. Having two fuel tanks also allows you to increase the miles covered between filling up.
An LPG conversion results in a bi-fuel car i.e. one that car run either LPG or petrol. A second, independent fuel system is added to the car for which a dedicated fuel tank is needed. The tank is usually fitted in the spare-wheel cavity, but can sometimes be installed underneath the vehicle. As with petrol and diesel, liquid LPG is bought by the litre and pumped into the tank via a hose and a dedicated filling point.
Converting to Autogas LPG can increase the power and performance of your car especially if it is a turbo model. However, generally there is a small loss in performance, but so small you won’t notice it while driving. What you will notice, compared with a diesel vehicle, is a smoother and quieter ride.
While it is true that Petrol is a slightly more efficient fuel than LPG, any fuel consumption efficiency is more than compensated for by a significant saving on the fuel itself. There is also a slight power loss when LPG replaces petrol in fuel, this difference however is barely noticeable on the road. Driving on LPG will appear smoother and more responsive than when using petrol.
No. Autogas is a cleaner burning fuel that doesn’t contain acids or leave behind carbon deposits. It can, in fact, increase the life of the engine.