Vehicle Performance

Modern LPG Auto gas engine technology provides performance and fuel economy comparable with contemporary petrol powered engines. LPG has a higher octane rating than petrol so converted spark ignition engines tend to run more smoothly. This reduces engine wear and includes less spark plug and oil changes. The higher octane also allows for higher compression ratio, which can deliver increased engine power output and better thermal efficiency, thus reducing fuel consumption and emissions.

Most modern vehicles install a Sequential Vapour Injection (SVI) kit. The SVI is an electronically controlled LPG system that has its own Electronic Control Unit (ECU.) The ECU controls the LPG injectors which are fitted directly to the inlet manifold of each individual cylinder. This allows for a precise mixture which optimises the combustion process. The SVI allows for a seamless transition from petrol to LPG and back. This system minimises the power loss as the closed loop operation electronically controls the LPG vapour injection.

LPG Auto gas has a lower energy value than petrol so fuel consumption on LPG Auto gas will be approximately 10-30% higher than when running on petrol. However with the cost of LPG Auto gas being up to 60% cheaper per litre than unleaded petrol a fuel saving of approximately 50% is definitely possible.

As with any vehicle regular servicing is essential to maximise the benefits of an LPG installation.

Engine running on LPG special treatment

LPG vehicles should be serviced just like normal vehicles. Especially on Dual-Fuel vehicles it is important to regularly operate the vehicle on unleaded petrol. This will ensure the petrol system components eg. Injectors, fuel pumps remain in normal working order. There are special oils available for LPG vehicles if you wish to use these please talk to the installer at vehicle collection for recommendations.

An appreciable reduction in overall engine wear is normal when using LPG. This is particularly applicable during engine start during cold conditions, because LPG does not wash lubricating oil from cylinder walls.