These oil drainers can be pneumatically or manually operated. Simply attach the airline to the drainer to extract the oil from the engine or drain by gravity into the large height adjustable bowl. When the tank is full, pressurize it to expel the oil from the tank to the oil disposal container. This drainer is fitted with a transparent oil inspection chamber to inspect the oil condition. Measurement readings on the oil inspection chamber indicate the amount of waste oil extracted. An oil level indicator is fitted on the main tank. A selection of quick attach/release oil dipstick probes are supplied. Both models have heavy duty castors and wheels for easy mobility.