In 1987, Mogas produced and supplied natural gas fuel
systems for the Nipawin District School Bus fleet. The buses were converted by
the resident staff at the bus garage under the technical assistence of Mogas
personnel. A Mogas CNG fuel system was fitted to each bus engine and six steel
compressed natural gas cylinders were mounted under the rear carriage of each
bus. The now bi-fuel buses can operate on compressed natural gas (CNG) or
gasoline at the turn of a switch. The Nipawin School Division operates a fleet
of 41 buses which transport 1280 students to nine schools. The buses travel
circa 6,200 km. per day to six towns and villages. The garage mechanics noticed
that since the buses had operared on natural gas the carbon build up in the
engines was far less then experienced before; nearly none. This substantiates
the claim that natural gas is a much cleaner-burning fuel than gasoline or
Since 1985, the fuel prices of gasoline, diesel fuel, and
propane have increased by 40% to 60%. In January 1991, the bulk prices of
gasoline and diesel fuel in Nipawin were $0.60/L and $0.53/L, respectively.
The cost of CNG was less than half, at $0.22/L, including compression
costs, maintenance costs and depreciation on capital. Based on experience, the
annual maintenance cost for CNG operation is anticipated to be about $0.05/L
over the 20-year life of the equipment.
Annual savings for the Nipawin
School bus fleet in the 1989-90 school year, CDN $39,000 .
Nipawin School District Bus with Mogas Natural