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Grill blocks help mpg intwo ways; better aerodynamics and quicker warm-up times. If you pulse and glide with the engine off, you can keep engine heat in with a blocked grill. IMHO an adjustable grill block behind the hexagons would benefit you much more than a slightly more aerodynamic but fixed grill block in front of the grill.
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60 mpg hwy highest, 50+mpg lifetime
TDi=fast frugal fun 
https://ecomodder.com/forum/showthre...tml#post621801
Quote:
Originally Posted by freebeard
The power needed to push an object through a fluid increases as the cube of the velocity. Mechanical friction increases as the square, so increasing speed requires progressively more power.
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Last edited by COcyclist; 03-11-2013 at 10:06 AM..
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