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Old 08-10-2011, 05:44 PM   #347 (permalink)
graydonengineering
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Join Date: Jul 2011
Location: Tucson, AZ
Posts: 147

Frontier 2wd 2.4L 5 speed - '98 Nissan Frontier XE
90 day: 27.87 mpg (US)
Thanks: 34
Thanked 53 Times in 27 Posts
Quote:
Originally Posted by pletby View Post
Today I filled up and for the first time I have gotten my three tank average over 30mpg achieving my goal. Also today I completed my first trip over 40mpg. Woo woo! Instant feedback rocks.

New goals: 35mpg 3 tank average and 30 mpg 90 day average. I may have to bite the bullet and get the engine fixed up. 2 O2 sensors are shot. Always when I'm broke.
O2 sensors are a big deal when it comes to MPG. You will probably gain 10% after they are changed. They are expensive so they will take a while to pay off with savings.

The humidity is through the roof right now and I swear the air resistance or engine performance seems off. Not sure which but I am haveing a hard time keeping up my 30 average. May be decreased intake temp also. I got 28.5 this morning, the worst mileage in a very long time. Still respectable but I was hoping for some great numbers after installing the last 1/3 of my belly pan. Looks like I have more work ahead to get those number up consistantly!
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-Miles

Best 15-mile commute city/highway mix: 37.7 mpg
Best tank so far: 31 mpg
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