Methods for washing gas turbine engines

A gas turbine engine wash process (40) that facilitates reducing a formation of particulate matter within a gas turbine engine (10) is described. The engine wash process includes injecting (60) a first liquid into the engine to remove particulate matter formed within the engine and adversely affecting engine operation and performance. A second liquid is then injected (80) into the engine to facilitate reducing a rate of formation of particulate matter within the gas turbine engine as the engine is operated in the future. More specifically, the second liquid is an anti-static liquid that coats compressor blades within the gas turbine engine.