Like natural gas, propane is clean burning, leaving no deposits that speed up engine wear. This means less maintenance and a longer engine life. Because propane is a low-pollution fuel, forklift trucks powered by propane can be operated safely inside factories and warehouses.

Combustion of propane

C₃H₈+ 5O₂--> 3CO₂+ 4H₂0

Figure 12 Propane-powered forklift Most industrial lift trucks run on propane.  Note the fuel cylinder behind the driver.