Faq

LPG system is selected individually for each car. Price of the installation depends on the components used, and the type of engine.
Details of installation and pricing can be obtained at one of our RECOMMENDED GARAGES.

No. Despite the fact that the LPG mixture is flammable, a properly installed autogas system in the car is completely safe. Gas installations for cars undergo a number of specialized tests and meet very high quality standards. They are completely sealed, and equipped with a number of safeguards.
As the market leader in LPG installations we have carried out numerous safety tests of our installations. The results were unequivocal – STAG LPG systems are safe even during an accident.

Good quality electronics, such as STAG components, should be functional for the rest of your car’s life. The warranty for these components is 5 years. The expiration date of a gas cylinder is up to 10 years. Although technically it should work much longer, it needs to be replaced after a decade.
The service life of operating elements, such as reducer and injectors, depends on operating conditions and the quality of fuel used. STAG reducers and injectors used on long journeys should last for 150-200 thousand km.

Yes. The propane/butane mixture itself is odorless, but odor components are added during the manufacturing process. This makes it easy to detect a possible leak or leakage. The odor of the mixture is therefore critical to the safety of the installation.
Old-type installations, known as mixer installations, are associated with a characteristic smell of gas during everyday use. Modern STAG installations are completely leakproof, so you should not smell anything in everyday use.

No. Old-type mixing installations did cause a decrease in power, which drivers weren’t happy about. Modern STAG autogas systems cause a drop of less than 5% of power – a value unnoticeable in use.
In order to work with ful efficiency, a computer-controlled LPG system has to be very precisely matched to the specific engine model. Such selection is carried out by a qualified gas fitter. It is worth choosing the place of installation carefully, so you can be sure they provide highest quality components, correct assembly and professional installation.

Not necessarily. When installing a STAG autogas system we can decide on the type of gas tank in our car. Large tanks mounted in the trunk are still popular, but drivers are increasingly opting for smaller toroidal tanks. These tanks are designed to fit in the spare wheel space. This solution allows you to keep the capacity of the trunk.

No. Type of fuel has no effect on engine wear.

Yes, STAG Autogas Systems offers systems designed for both direct and indirect injection engines. Autogas systems for direct injection are dedicated to a specific engine code. Our installers precisely select the installation components for the code, type of engine and engine power. We also offer installations designed for diesel engines.
It is advisable to entrust the selection of an installation suitable for your vehicle to experts from STAG Authorised Service Centres.

Yes. Gas has a lower calorific value than petrol, and it is supplied to the combustion chamber in the vaporized state. For this reason, a car powered by LPG burns about 10-20% more fuel per 100 kilometers than those powered by conventional fuel. Nevertheless, driving on LPG is more economical. The difference in fuel prices means that despite the seemingly unfavourable increase in combustion, fuel cost savings can reach up to 40%.

An engine powered by gas burns more liters of fuel than an engine powered by conventional fuel. Depending on the type of engine and installation, the difference is 10-20%. Nevertheless, due to the significant difference in price between LPG and other fuels, running on LPG is much cheaper than running on petrol, despite the increase in combustion.

Yes, petrol is necessary to start the engine.
Modern STAG autogas controllers start LPG system only when the liquid in the cooling system reaches the temperature suitable for heating the reducer.

In some car models petrol can be used for the so called petrol injection. This means that in certain ranges of engine speed the gas supply system works in parallel with the petrol supply system. In indirect injection systems, this may serve to protect the valve seats. In systems with direct injection, this is to protect the petrol injector – in these cases the petrol injection is constant and continuous.
The percentage of petrol injection and individual petrol consumption depends on the type and class of installation and also on the type of engine.

Yes. If the car has a well-working engine, installation of the system is not a problem. However, it should be taken into account that even minor faults that produce insignificant symptoms when running on petrol can seriously disrupt the operation of the LPG system. For this reason, in older cars it is worth to routinely replace high voltage cables and spark plugs. Special attention should also be paid to the engine’s electrical harness. In the absence of hydraulic ignition clearance adjustment, valve adjustment is necessary.

No. However, before installing the system you need to make sure that the ignition system of the engine is in perfect condition – gas combustion is more demanding for the ignition system than petrol combustion.
In case of younger cars, a standard inspection and oil change is enough. In case of older cars, it is worth to check carefully if there are no more serious defects such as excessive blowing of gases to the crankcase due to wear of piston rings or cylinders. You should also check if the car does not consume too much oil.