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Old 07-14-2008, 12:47 AM   #6 (permalink)
xbUser
Box Dreamer
 
Join Date: Jul 2008
Location: Pittsburg, CA
Posts: 154

xB Commuter - '04 Scion xB
90 day: 40.76 mpg (US)
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I don't feel safe to EOC, since 90% are freeway driving. I can't afford to make one mistake, and that definitely will scare my passengers.

Driving 65mph is the slowest vehicle on the bayarea freeway. Even the big trucks pass me. I can't find one for drafting.... Driving down to 60mph maybe dangerous and selfish when others are driving >70mph.

I also tried tire pressure to 48psi, I feel the great loss of brake power. I am trying 44psi, which is acceptable.

I don't think blocking the grille has a big effect since now is summer. The car warm up very quick. Aeromod the bumper may take too much work for additional 2mpg.....

Few more things I am trying in this tank: 1) shift below 2k (5th @35mph) and accelerate very slowly. 2) Now, I am using AC 20% of freeway driving. Hopefully, the temperature won't go up to 100F again, so I can drive without turning AC on. 3) pump up the tires to 44psi from 40psi.

Any scion xb owner has scangauge? what is the best speed/gear combination in city and freeway?
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