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Fading fuel economy

2738 Views 12 Replies 12 Participants Last post by  johnmo
I find that I'm having a hard time keeping my fuel economy above 40mpg. At least according to the DIC. Commute is 90% highway, about 20mi, and I drive like an old man. Each tank seems to be a little lower. The only thing I can figure is that it's been quite hot and I'm running the AC full blast. Is that really enough to have that big of an impact on fuel economy or should I bring this up at my first oil change? Only 3k mi on the odometer right now.
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Never seen anything need an air filter with 3000 miles since it left the factory!
I haven't either, I changed mine at 28000 and honestly it was pretty clean. I will probably check mine before replacing it next time
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