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Newspaper
Toodyay Herald
Location
Toodyay, Western Australia, Australia
Date
Dec 13, 1929
Page
6
English tests show atmospheric humidity lowers engine power by about 7 percent when moist air surrounds the engine. Water vapour slows combustion, reducing knock but making engines feel smoother. Humid air improves cooling, reducing boiling risks, while petrol consumption stays nearly unchanged within ordinary humidity ranges.
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