Which of the following statements is LEAST-Likely true?
A. NOX is formed when nitrogen and O2 combine in the combustion chamber at sustained high temperatures in excess of 2,5000F.
B. When NOX is combined with HCs in the presence of sunlight, smog is formed.
C. Deposits are more common on engines with low mileage.
D. A lean air-fuel ratio can increase NOX when it causes preignition.
Answer: C
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