Aircraft Water-Methanol mixtures are produced exactly to the specifications of the engine manufacturer. Manufacturing process is performed with painstaking care to insure top quality performance. Each batch is checked numerous times to assure top quality. Raw materials are analyzed prior to use to prevent contamination. Special tanks and drums are used. The water-methanol mixtures are formulated under strict laboratory control, and all material is final filtered prior to drumming. Each container is lab tested individually before shipping.