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Old 03-10-2013, 11:11 PM   #9 (permalink)
Blue Angel
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Join Date: Feb 2013
Location: Ottawa, ON, Canada
Posts: 183

Cruze Eco MT - '12 Chevrolet Cruze Eco MT
Team Chevy
90 day: 44.29 mpg (US)
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Originally Posted by ChazInMT View Post
A recessed block will give you 95% of the benefit of a smooth one...

...By diverting the air around or over your car, you are sending it on a less resistive path than going through your radiator and engine bay.
I'm assuming this to be somewhat true since the factory grille shutters GM put in the lower grille opening are recessed quite a bit. Although on a mass production platform like the Cruze I bet the Engineers had to work within a lengthy set of compromises to get the idea into production, the largest of which could have been the requirement to work with the same facia as all the other models...
2012 Cruze Eco 6MT
If it's slow, it might as well be efficient!

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