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Current: 2006 E500 4 Matic Past: 99 ML430, 99 E430
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180 Posts
Discussion Starter #1
I bought the car 2 years ago, and I noticed the side vent is much stronger than the center vent, about 2 times of blowing air out by the feeling of my hand.
About 3 months ago, I went to the dealer and had the coolant changed. Since then, I noticed a increased amount of power for center vent and decreased power for side vent. By feeling of my hand, the center vent is 1.5 times stronger than side vent. And also, if I close the center vent, the side vent would have a consequential increased flow rate.
Sounds really mysterious to me.
 

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2000 W210 E55 AMG, 2002 SLK32 AMG, 2007 W164 ML320 CDI
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218 Posts
my car has a much stronger side vent then center vent also
 
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