A Houston motorist filled up his Volkswagen at a 76 gas station, only to realize he had pumped a milky white liquid that didn't smell like gas.The liquid was likely contaminated fuel, possibly from water entering the station's tanks, which can cause rough idling, misfires, and engine damage.Another explanation could be a Diesel Exhaust Fluid (DEF) mix-up, leading to corrosion of fuel pumps and injectors if introduced into a gasoline tank.Diesel fuel contamination is also a possibility from delivery or equipment errors, causing serious damage to gasoline engines.Ethanol phase separation can create a dense layer of ethanol and water in the tank, affecting fuel quality and engine performance.Consequences of filling up with contaminated fuel include fuel system damage, injector failure, and potential repair costs of $2,500 or more.Contaminated fuel can lead to corroded fuel pumps, engine misfires, and damage to catalytic converters and oxygen sensors.Facing uncooperative station personnel, the motorist's car stalled shortly after leaving, resulting in repair costs and work disruptions.Inquiries to the station and the parent company, Phillips 66, have not yielded satisfactory responses regarding the incident.It is crucial to address fuel system maintenance and monitor for potential contamination to prevent costly damage and engine issues.