The savings, with just half of the fleet converted, has been substantial, says Evans. With propane costing less than half that of gasoline ($1.21 per gallon versus $2.59 a gallon) and a federal tax credit reimbursing the department 50 cents on every gallon of propane used, the savings quickly add up. "We burn around 120,000 gallons of fuel a year," Evans says. "By year's end, we'll save close to $100,000, and it's all due to using propane."
Evans' savings estimate is on fuel price alone, but there are other benefits to propane conversions. According to the National Propane Gas Association, propane offers the longest driving range of all clean burning fuel alternatives and fleets report two to three times longer service life. In fact, the Jackson County Sheriff's Office now stretches oil changes to every 6,000 miles instead of every 3,000 because propane burns cleaner, a critical factor as the department's patrol cars' odometers spin up pretty fast serving a population of nearly 60,000 spread across 343 square miles.
Conversions are fairly simple, adds Wayne Abbs, president of Force 911. The installation equips vehicles with a separate propane system designed to operate in conjunction with gasoline. According to Abbs, the propane system includes its own tank (installed behind the vehicle's rear seat) and injector system, allowing the vehicle to run off gasoline when propane levels are low. "It switches to gas automatically and you don't even know it," he says.
While the average retrofit costs about $5,800, Evans notes converting so many vehicles at one time drove the cost down to just $3,500. "Because we used confiscated drug money to do this, it has been at no cost to the taxpayer," he adds, noting the expenditure will be recouped by year's end. This money in turn will offset the cost of adding a propane fueling station at the county's gasoline refueling site.
Saving money with alternative fuels just makes good sense, says Abbs. "With police agencies doing the amount of driving they do and the economy the way it is, the money saved with these conversions can be used to replace or keep employees or save the taxpayer money," he says.