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Old 08-05-2013, 04:18 PM   #6 (permalink)
ConnClark
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Join Date: Jun 2008
Location: Richland,WA
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Das Schlepper Frog - '85 Mercedes Benz 300SD
90 day: 23.23 mpg (US)

Gentoo320 - '04 Mercedes C320 4Matic
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Quote:
Originally Posted by Lbar View Post
What is the benefit of an egr cooler?
Its more effective at keeping the combustion gases cool and keeping energy losses to the cooling system down. One has to be careful not to over cool the EGR gases however. If the water molecules in the EGR condense the combustion energy must overcome the heat of vaporization which robs power and fuel economy.
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