08-06-2016, 09:36 PM
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#1 (permalink)
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Master EcoModder
Join Date: Nov 2010
Location: US
Posts: 1,015
Chief - '06 Pontiac Grand Prix 90 day: 26.7 mpg (US) SF1 - '12 Ford Fiesta S 90 day: 30.95 mpg (US)
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Why You Should Never Warm Up Your Car
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Engine oil dilution. It turns out, while you might have thought that letting your car slowly warm up was reducing wear and tear, all that idling time leads to raw gasoline seeping into the oil, breaking down the oil's lubrication properties and increasing the wear.
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From here:
Is Warming Up Your Car Bad? - Why You Should Never Warm Up Your Car in Winter
Another reason. not to warm up.
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