TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: (A) comprises 12-23% or 20-68 (preferably 20-22) wt.% of water; methanol; and less than or equal to 20 wt.% of additives. (A) comprises 20-22 wt.% of water, 4-6 wt.% of dimethyl ether and methanol. (A) is a single phase fuel composition. (A) comprises dimethyl ether as one additive in an amount of less than or equal to 20 wt.% of the fuel composition. The pre-fuel composition comprises 7-10% of ether. The pre-fuel composition further comprises water. Preferred Components: The additives are ignition improvers, fuel extenders, combustion enhancers, oxygen absorbing oil, lubricity additives, product coloration additives, flame color additives, anti corrosion additives, biocides, freeze point depressants, deposit reductants, denaturants, and/or pH controlling agents. The fuel comprises 3-40% water, and less than or equal to 20% dimethyl ether. The total amount of water and methanol is at least 80 wt.% of the fuel composition. The methanol in the diesel fuel composition is a crude methanol. The additives comprise: a product coloration additive at up to 1 wt.%, and a flame color additive, at up to 1 wt.% of the fuel. Preferred Process: The process comprises: pre-heating the intake air to 150 degrees C-300 degrees C; passing exhaust material from the engine through a heat exchanger to preheat the intake air stream entering the engine; cooling exhaust material through the heat exchanger, collecting water from the cooled exhaust material and recycling at least a portion back to the fuel; cooling exhaust material through the heat exchanger, collecting water and fuel and other combustible components from the cooled exhaust material and recycling at least a portion back to the fuel; condensing exhaust material, collecting water from the condensed exhaust material and recycling at least a portion back to the fuel; and using a salt water/water heat exchanger to condense water from the exhaust material. The process includes: purifying particulates from exhaust material and recycling the particulates back to the engine; adding a chemical treatment to the fuel to neutralize any pH or other imbalances; purifying exhaust material to capture unburnt exhaust pollutants and recycling these to the engine; and fumigating the inlet air with a fumigant containing an ignition enhancer. The process (A): recycling the exhaust heat and/or water back into the engine; comprises exchanging heat from the exhaust gas through a heat exchanger to water in a hot water loop, and transferring heat in the water through the hot water loop to a local community. The process (A) comprises mixing engine exhaust gas with water in a mixer to cool the exhaust gas and recover water from exhaust gas condensate; pumping water from the mixer to a liquid/gas heat exchanger to further cool the water; recovering water from exhaust gas in a final stage exhaust gas condenser; comprises adding a chemical treatment to the exhaust gas to neutralize any pH or other imbalances; and processing in a preprocessor a pre-fuel composition comprising methanol and ether, and optionally water, where the pre-processor separates the ether from the methanol, and the using the ether as the ignition enhancer in fumigating the inlet stream. The process for powering a compression ignition engine includes pre-heating the intake air to 150 degrees C-300 degrees C. The process (A) comprises adding water to the methanol-based fuel for powering the engine using methanol-water fuel; transporting the fuel from a fuel manufacturing plant to the engine location; and transporting the pre-fuel composition from a fuel manufacturing plant to the engine location. Preferred Components: The power generation system is adapted to power a rail vehicle, and the process (A) comprises treating exhaust gas to remove particulates from the exhaust gas and recover heat and water to recycle back into the engine and/or to use on the rail vehicle. The power generation system is adapted to power a marine vehicle, and comprises treating exhaust gas in a desalinator to recover heat and water to recycle back into the engine and/or to redirect for use on the marine vehicle. EXAMPLE - Typical composition comprised (in vol.%): methanol (25); diethyl ether (10); and water (65).