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Discussion Starter · #1 ·
I have a 2008 titan 4x4 love the truck and runs great. I have been checking my miles per gallon a lot. With 87 octane i have been getting around 15.8 in town but here is the kicker when i run 93 i might get 12.9 at the most 13.5 what the h*ll. I was talking to two other guys local with the same truck getting 19 in town on 93 octane. So is there something wrong or what.
 

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Discussion Starter · #3 ·
Two different guys with 08's. The best i have ever got in town was 17.3 and that was driving like an old lady i would rather get 15's. But the bigger question is why worse mileage with higher octane.
 

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daptech said:
19 MPG around town in a Titan is not going to happen.........may
be a BS or math problem:D
x2. My Titan on it's best day, completely stock got 15 and that was babying it. Some claim to get 19 and 20mpg, but I just very seriously doubt that's accurate.
 

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I get 15+ on the freeway in my 08

This is speculation only.

Would using different grade gas cause the ECU to adjust the A/F stream to compensate the grade?

Almost like getting the 2* advance done, when they set it to relearn?

I run 89 myself, Though if I truly worried about mpg I wouldn't of bought the Titan.

I would be sporting one of those gerbil cars that get 50+ mpg :gay:
 

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dc_909 said:
Would using different grade gas cause the ECU to adjust the A/F stream to compensate the grade?


Nope...different octane gas won't make any difference there.
 

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yeah i highly doubt when any of us bought our titan that gas mileage was on our minds we knew that it was going to be crappy REALLY!!!!!!!!!! crappy
 

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why is this topic of gas mileage seem to always come up every week or so? we all knew what we were getting when we bought our trucks right?
 

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primetime said:
I dont give a sh*t if i get 2 or 30 mpg. I just want to no why i am getting worse with a higher octane.
Technology of the newer vehicles that run better on 87 octane......
Mine does the same.....:dunno:
 

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VegasTi said:
Doesn't higher octane fuel ignite faster?

Nope...doesn't burn faster or slower than regular gas. May contain more detergent additives though.
 
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