MonoBlock compressors use a Chrysler 5.7-liter engine. One bank of the V8 engine controls power; the other is used to compress air. Model 185E provides 185 cfm and can handle two breakers. The fuel-injected engine starts without cold weather aids to -20F. At 1,560 pounds, the 185E consumes 3.3 gph at full load, says the company. To reduce maintenance costs, the unit's design eliminates the air end and oil system associated with the rotary-screw diesel units, which eliminates the compressor oil, oil filter and separator element.