P&G works with an auto, i just leave the car idling in neutral.
SG pumps up mpgs to between 180-200 gliding from 60-50. then drops to about 25 while accelerating from 50-60. with an even pulse and glide time it comes out to about 48mpg's on the hwy, and glides are generally longer. I think i get around 50 on the hwy doing this, however i have about 50/50 hwy city driving... i sit around 32mpg in the city
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