LPG dispensers look and operate much like a normal petrol or diesel pump. You use a bayonet-type connection that locks on to the LPG filling point on the car, and then pushes a button to start the flow of gas from the dispenser to the vehicle. It's very easy to use, quick, clean and safe, when you have filled the tank, you release the button on the pump, squeeze the trigger to release the catch and a small whoosh of gas (makes you jump the first few times!) happens as the tank reseals itself.If you run out of LPG then at the flick of a switch you can drive on petrol as you still have a petrol tank as well. View a video clip of filling up with LPG

and after 30 to 60 seconds the LPG will automatically switch over , so a little petrol in the tank is needed. However, when you start filling up with LPG you will be loathed to buy more petrol than you absolutely have to (I’ve managed six months before I needed to put £5 worth of petrol in my LPG Ford Focus!)Kind to cars
LPG powered cars have reduced engine wear because LPG burns cleaner than petrol because it is 100% octane.
Any car can run on high (5*) octane fuel without modification, infact many problems with engines today are related to the lower octane fuels available.
Using LPG means less emissions and less carbon deposits in the engine. The oil and spark plugs will last longer, and all LPG cars run quieter and smoother.Kind to wallets....To fill the LPG tank will cost around £16.00...(at
40p a litre) which in an Astra will take you 300 miles !!As well as 40
pence a litre, the road tax is less too, for instance a 1.6 LPG Vauxhall Astra costs £115.00 for 12 months Road tax. LPG cars don't cost more to insure
either.
LPG Emissions
Compared to Petrol
Compared to Diesel