American Liquid Waste Magazine - June 2012 North American Sweeper Magazine - June 2012 Issue - Page 25 JUNE 2012 NORTH AMERICAN SWEEPER 25 How To Get It If Your Vehicle Runs On Diesel There are kits for diesel engines that add a small spray of propane to the diesel fuel under speci c driving conditions that might give you better fuel economy and be a little cleaner, says Campbell. There are other companies that make conversion kits for diesel, such as TechnoCarb which makes the EcoDiesel System. However, you will probably want a certi ed installer to put it on for you. We have a saying that says that when you add a little propane to diesel, you go a little faster, when you add more propane, you go even faster, but when you add too much, you blow your engine, says Eric Leivestad with Carburetion and Turbo Systems, a distributor for alternative fuel products. These systems have to be carefully calibrated. And, it works best on large turbo diesel engines. Trucks that come straight from the manufacturer are also an option. Freightliner, Kenworth, and Mack all offer chassis that run off of Lique ed Petroleum Gas (LPG). Elgins Pelican is available with propane. TYMCO makes their Model 600 that runs on LPG. Check with your favorite manufacturer for other options. Obviously, if you have to buy a new truck, the cost of going green rises substantially. But, if you are in need of a new truck anyway, looking at one of these models may save you more in the long run while reducing your  eets overall emissions. Sweepers Get Propane Campbell-Parnell converted all of Night Hawk Sweeping of Texas parking lot sweepers to propane in 2006. The company was willing to pay the upfront cost to reduce their carbon footprint. The conversion was done on a GMC chassis, with the propane sitting between the cab and the sweeper equipment. The Illinois-based sweeper company, The Katz Group, uses a propane sweeper. Its really clean and it runs nice, says Richard Katz. Its easy to convert to propane and a huge cost bene t. Anything that we can do to get away from gas or diesel we try to take a look at. The down sides are that we cant go very far and we have to make sure that the propane  lling place is open, because it isnt 24 hours like a gas station. Cost And Savings Saving the environment and reducing your carbon footprint is a great goal, and sometimes the main goal for a company, while others would just like to lower their costs. Sometimes when you go green, you can accomplish both. As this goes to print, the average cost of a gallon of gas is $3.87, while the average cost of propane is $1.82 per gallon (without wholesale discounts). Many of Campbell-Parnells customers have a fueling station put on their property allowing them to buy the propane at an even lower cost. Some states waive the excise tax on propane if you are using it to  ll your vehicle, says Campbell. Since a large portion of the cost of fuel is taxes, that can result in signi cant savings. Obviously, you will realize that difference in savings. But, keep in mind that fuel prices always  uctuate and your cost savings today may be more or less tomorrow. Other factors come into play as well. Campbell-Parnell has a neat spreadsheet that allows you to calculate your savings based on your current fuel ef ciency, the average miles per gallon you get, the cost of gas, the cost of propane, and the size of your  eet. In reality, some people can get a return on investment (ROI) in 12 months, while others take 24, says Campbell. Most  eets, because they drive more than retail customers, will achieve an ROI in about 18 months. But, again, it just depends on a variety of factors. Campbell-Parnell only converts vehicles with gas engines. The cost per vehicle is $6,000 to $7,000. The technology that they use requires spark ignition. Because diesel engines use compression technology, you cannot use the same product. With the Campbell conversion, the gas engine still functions. Other Considerations Filling the propane tanks is another factor to consider. In Arizona, we have propane  lling at gas stations, says Campbell. But in a different state, you may not have that. We help our clients  nd out if they are near a provider or if building a  lling station on your property is viable. Companies like AmeriGas and Ferrellgas as well as smaller independent propane companies can help with building a  lling station.Lack of  lling stations can be an issue, so before you buy or convert your sweeper, make sure that your community has the infrastructure you need to support it unless you are willing to build one.Campbell-Parnell works with their customers to train them to use the system. We make sure the operators are comfortable with the system and answer all of their questions, says Campbell. We also conduct training for the mechanics, whether they are onsite or at the shop down the street from the customer, to ensure that they know how to maintain and service the system.Before you make a decision on converting, or who to buy from, make sure you do your homework  rst so that you know what you are getti ѼQѼѡɕЁ́ѡЁѡٕͥ́ݕѡՙɕ̸AɽɕЁѥȁͽ For more information on Campbell-Parnell, please visit For more information on TechnoCarb, please visit Story by Jennifer Taylor Resources For more information: Q Freightliner, please visit Q Kenworth, please visit Q Mack, please visit Q Elgin, please visit Q Tymco, please visit