Quote:


Here in Maryland (little California ), I was looking at gov't auctions for mid-90's mopar small block trucks and B-vans and Y2K ish Ferd Crown Vics that were factory set up for LNG. They were basically going for near salvage value because the tanks had expired.



I few years ago
when I was searching salvage yards online
looking for
factory Dodge 1992-1995 5.2 CNG vehicles,
I noticed that there were a lot of
Propane conversion 5.2/5.9 V8 Dodges
in salvage yards in Canada
and some in the far northern USA.

Apparently in the early 1990's the Canadian government had a tax incentive program to convert vehicles to Propane.

At late year 2011 current prices
CNG is a lot less expensive than
Propane.

As a rough 'rule of thumb'
you can take the
'cost per million Btu' price of natural gas,
divide by 10
then add in 50 cents
to find the
"Gasoline equivalent price" of CNG

With bulk
Natural gas prices
around
$ 3.57 per million BTU fon the futures markets
0.357 plus 0.50
= 86 cents per gallon fuel

Propane is in the
$2 to $3 per gallon range in the summer
when prices are best,
and you need to increase this by about 15% to reflect the LPG heating value difference compared to
117,000 BTU per US gallon
average 87 octane
USA pump gasoline
{even less in winter blend}