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NGK WARNS OF ADULTERATED GASOLINE Based on studies in its engineering department and in collaboration with fuel distributors, NGK is alerting to the difficulties that adulterated gasoline may bring to the proper operation of vehicle engines. Recent studies show that this is not a large scale problem, but it is cause for special attention. One of the indications of possible fraud in retail fuel is the contamination of organic silica due to some illegally added product. White deposits on spark plugs, combustion chambers, oxygen sensors, and the exhaust system are indications of as much as 300,000 ppm of silica. In fuel-injected automobiles which use oxygen sensors, the accumulation of this contaminant gravely interferes with the oxygen signal, thus making the air-fuel mixture very poor and harming the vehicle's driveability. Older models without an oxygen sensor do not display any symptoms of a problem to the driver. In this case, only regular maintenance and inspection of spark plugs will be able to detect the problem. NGK
advises motorists to follow the advice of specialists. Try to use
the same gas stations and be attentive to indications of failure
that your engine may be showing. Also, follow the vehicle manufacturer
check-up schedule. |
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