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Decreasing gas mileage

Tiny
DHUBBARD
  • MEMBER
  • 2002 FORD ESCAPE
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 69,000 MILES
I just replaced the tires on my 2002 Ford Escape a few weeks ago. They were filled with nitrogen for the first time. I heard that nitrogen provides better gas mileage, but I know it wasn't going to bring major changes in my overall mileage. The problem is, ever since I got the new tires, my gas mileage has actually decreased pretty significantly. I'm not driving any more than I normally do and my driving habits haven't changed at all either. After the new tires, I had my rear shocks and front struts replaced. I also had a front alignment done. Is there a reasonable explanation for this or am I just overreacting? Also, I read somewhere that gas mileage naturally decreases in the winter time. Any truth to that?
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Monday, December 13th, 2010 AT 6:04 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Cold temps requires a richer fuel mixture for the engine to run properly. So, yes it can cause it. However, how much of a change have you noticed?
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Monday, December 13th, 2010 AT 6:06 PM
Tiny
DHUBBARD
  • MEMBER
  • 2 POSTS
Most recently I've noticed a drop of about 20 miles or so on the overall mileage.
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Monday, December 13th, 2010 AT 6:09 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
If that is per tank full, it could be caused by the cold temps. If it continues to get worse or the check engine light come on, let me know.
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Monday, December 13th, 2010 AT 6:51 PM

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