Customs authorities are investigating a case in which a vehicle was sold petrol mixed with water at a Shell station.
The vehicle owner said his car broke down after leaving the station and that he was later told by a mechanic that there was water in the tank, the Hong Kong Economic Journal reports.
Shell Hong Kong blamed the incident on “procedural error” during an oil pipeline maintenance work.
A Shell spokesperson said an internal investigation found that water was mixed with a batch of V-Power petrol and delivered to a service station on Tai Po Road.
The spokesperson said other gas stations were not affected.
Lo Kok Keung, a former lecturer in the mechanical engineering department of Hong Kong Polytechnic University, said water should never have existed in any petrol products.
Even while air could have entered the pipes during the process of refilling, the minimal amount of water vapour in the air should not have had an impact.
Lo said there might have been leakage in one of the underground oil tanks at the gas station, or there might be cracks on the ground above the oil tanks, which led to water sipping into the tanks.
He said that if a tank of petrol has over 50 percent of water content, it could lead to engine failure and breakdowns.
[Chinese version 中文版]
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