Quote:
Originally Posted by jayson_waltz
if you don't have a stereo system the alternaotr isn't woking harder with the drl's on. if you wanna get technical i guess you might gain .00000000000001 mpg
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There is an ecotec on gassavers.org that is pushing 70 mpg. Reading the logs of this driver, it appears that alternator drag is affecting his mpg from 2-4 mpg. So for a driver that is getting 20 mpg and not 70, a full 1 mpg loss from alternator drag is entirely feasible. Here is the gas useage log from a 70mpg ecotec:
http://www.gassavers.org/garage/viewgaslog/649?