Thread: gas mileage

Did 204 miles round trip up north to the cabin today, filled up before I left and re-fueled once we got home.

Pump clicked off at 8.7ish gallon used and after the math it just about 23 MPG. I was very suprised how well it did on the freeway, most of the driving was at 66-68 mph and about 60 miles was county roads at 55-60 mph. Some cruise control used on the way up and really none on the way back, motor is just bumming along at 1700-1800 rpms.

All that with a lowered 06 Sierra 2WD with now over 256,000 miles on the motor.

I'm probably getting 12-14mpg with a faulty o2 sensor and my rear o2 not tuned out plus running NGK plugs which I feel saps some mileage too. Getting it all straightend this weekend.

I just managed 26.2mpg on my gtp ladt weekend when I went up north. Pretty happy with that.

My mpgs went up to 33 from 29 highway after a tune yay

Sent from the Milky Way

I get about 24-25mpg highway cruising at 72.
About 10-15mpg city driving.

Running headers, 3.4 pulley, 1.8 rockers, CAI, 160 T-stat.....I get about 25 on the highway doing between 70-75 ( DIC is extremely close to math based results ). About time I bump up to a warmer T-stat for the colder winter.....may do that this weekend.

Thing that irritates me is the gas gauge being off. These cars came with a 18 gallon tank. My gauge thinks its a 12-13 gallon tank. At 1/2 tank, I fight to get 6-ish gallons in it. The gauge goes to "full-ish ", but, I can never get it to peg the needle out much less barely get it to the Full line. Gauge always reads a little higher at start up, too. Falls a little even sitting still and idling for a minute or so. I know I got at least a 400 mile range capacity, but, when those little lights go off saying I need gas....I just can't bring myself to push it out.

Originally Posted by TwiztdWun

Running headers, 3.4 pulley, 1.8 rockers, CAI, 160 T-stat.....I get about 25 on the highway doing between 70-75 ( DIC is extremely close to math based results ). About time I bump up to a warmer T-stat for the colder winter.....may do that this weekend.

Thing that irritates me is the gas gauge being off. These cars came with a 18 gallon tank. My gauge thinks its a 12-13 gallon tank. At 1/2 tank, I fight to get 6-ish gallons in it. The gauge goes to "full-ish ", but, I can never get it to peg the needle out much less barely get it to the Full line. Gauge always reads a little higher at start up, too. Falls a little even sitting still and idling for a minute or so. I know I got at least a 400 mile range capacity, but, when those little lights go off saying I need gas....I just can't bring myself to push it out.

Still on the original sender? Mine was always pretty accurate as far as gm's go. A few lines above e, I always get about 14.5-14.8 gallons in. Just meaning that on e has about 2-2.5 gallons left. I recently replaced mine with a dorman unit which consistently reads a few lines higher than the stock unit did at the same fuel level. Not sure how I feel about that. I guess I'd only have 1.5 ish gallons on e now

According to the DIC I've averaged 22.8 in the past month or so, which is pretty accurate - when I fill up, I get about 22 in the black car.

I had about 28 in both the Regal and the LeSabre.

And the Prius... 50, all day long. There's a reason why I haven't sold that car

I really enjoy the trans settings. Sadly my commute mpgs haven't changed because fking hills suck. Plus with it being colder I've been losing some MPGs

Sent from BFE

23mpg 47mph left in 3rd. Saw 23.1 a few times but boost. 5 stop lights and 3 stop signs on my 12mile 1 way journey

I got 29.6 on my last fill up on standard gt no mods - but a slight misfire that I haven't gotten around to fixing.

Filled up earlier tonight for 31.2 still slight misfire.

Filled up 14.27 gallons, at $2.89/Gal for regular at shell. Got 16.6 mpg on that last tank.