gas mileage drop

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Nov 1, 2006 | 01:13 PM

#16

Msedanman

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From: Cambridge, Ont. Canada

Quote:

Originally Posted by JerryD

Depending on state, winter gas additives may reduce gasoline effectiveness 5-15%

+1....good point....IMHO.

C.

Nov 1, 2006 | 01:54 PM

#17

raff

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Joined: Sep 2006

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From: Centreville

Quote:

Originally Posted by grifter91

So I am over 11000 miles on my G. I would roughly get 300 miles at approx. 16 gallons. Lately, it would seem it has gone down to about 260-270 @ 16 gallons. The air filter was super dirty so I said screw it and got a new one. Always use Shell 93 from the same station. Driving style is basically the same. Not quite sure what is causing the problem.

Any ideas?

weird. when i drive about 280 miles i fill 14.5 gallons. i shift between 3k - 4k

Nov 2, 2006 | 01:48 PM

#18

grifter91

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From: Long Island, NY

I don't know what is going on. For the moment, I will accept the winter fuel theory. Perhaps this weekend I will clean the mass air and perhaps check out the throttle body as well to make sure the butterfly is not sticking open. Otherwise, I may just do a reset as well.