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Old 12-11-2012, 11:53 AM   #2600
saabarupp
Scooby Specialist
 
Member#: 189032
Join Date: Sep 2008
Chapter/Region: MAIC
Location: Pittsburgh
Vehicle:
2015 STI CWP
'12 Impreza Sport Ltd DGM

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Quote:
Originally Posted by thom52 View Post
Question...
Consensus seems to be that part of the significant consumption hit for the first couple of miles is warming up all the extra gearing for AWD.

How does sitting in the driveway with the engine running, help warm up the AWD gear oil? Seems like that would be an arguement in support of the "drive gently for warmup" theory for the shortest distance to a "warmed up" AWD car, and therefore much improved mpg.
In automatics the transmission "cooler" is conversely a transmission "warmer" when it is cold out. Of course, it will still warm up faster if you drive it.
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