The local POCO's were very keen on CNG in the late 80's till mid 90's. Obviously there was a lot of time wasted to go to a CNG station each time especially when going in a rural area.
Some vehicles in the fleet were CNG only, others dual fuel, so you could switch to petrol.
Now most POCO vehicles are diesel powered.
CNG was heavily compressed at around 200 atmospheres pressure in a heavy steel tank, usually took up about ½ your car boot. CNG Price worked out at about 60% of your petrol cost and no R.U.C.
There was some loss of power with CNG unless a electronic timing advancer was fitted in addition to the fuel change over switch.
CNG requires about 22° advance compared with petrol around 6° adv.
I ran my own old XY Falcon (4.1 litres) for 12 years on CNG and petrol with no problems whatsoever.
[This message has been edited by RODALCO (edited 02-10-2006).]
