My truck says I get 11 mpg.

 

04 Blazer, 4wd, 4 door, 4.3, stock everything.

Driven smoothly with slow accelerations, I get between 17-19 mpg. That's 80% highway/rural, 20% city.

 

damn i guess i shouldnt complain about my 16-17....it could be worse lol

 

So I recently got my 94 full size blazer 4x4. Everything seems to be stock or pretty close.

Just did a 400 mile trip. With traffic, rain, crazy high winds, lots of idling around the infield at a race track helping with a car. I average 17mpg on that tank of gas. I'm a bit worried my TBI is trying to melt down the 350 since that's 2mpg better than the factory rated highway mileage.

 

In my stock 02 LS, I've been getting 10-11 in the winter with ten minutes of idling twice a day to let her warm up. Once the summer came, and i cut the idling down to just about zero, I saw it stretch a little to just over 12ish. I drive short trips though, 1-3 trips a day, all under 4 miles, maybe two stop signs and three lights on average. I just find it pitiful I get the same gas mileage as my dad's burban. Makes me consider buying a full size. I just changed the oil with pennzoil high mileage oil and dumped a bottle of some fuel system cleaner down the gas neck. hopefully this will help it a little bit. I also debadged the sides to make it more aerodynamic...

 

98 LT, 4x4, 4.3L V-6. Owned since 11/2012. Always gently-driven. Never use 4 wheel drive. About 80% city/20% highway. Has P0300 error code (intermitant Misfire) issue which I will address soon. (so many posts to read on this problem!) Use mid-octane gas vs, regular thinking it might help misfire problem a little. 147,xxx miles. Uses no oil. Can't believe some are getting close to 20 mpg. Would be happy with the 16-17 mpg range most seem to be in.

 

Misfires eat fuel with zero payoff - basically like sending it right out the tailpipe without any help pushing you down the road. Once that's fixed, I can guarantee your mileage will go up. Changing octane won't do much for you in that case. These engines aren't high-compression -- anything higher than 87 is tossing your money out the tailpipe along with the gas ... unless, of course, you live in a state that doesn't add ethanol to Premium - in that case, the extra money is money well spent. You'd see mileage go UP in that case.

 

4.3L w/ 4WD LT Blazer. 120,700x. Northern Cincinnati, 60% Highway, 30% High stop and go, and 10% city/town.

The AVG MPG on my ceiling column says I have an avg of 18 MPG. I've only had it since 117K though, so my driving could be a little different. I have noticed though, on the highway at 70MPH with cruise control, I've been sitting pretty at 25-27 MPG. This bitch is stock and leaks oil. The Instant Econ could be broken too though.

I'll attempt the method in the OP at my next fillup

 

Just changing tires killed my MPG was getting almost 15 mpg now at 10 mpg sporting

Yokohoma M/T's they do hum not as bad as super swappers then add extra weight like

towing hitches, bull bars- winches

I use both for towing boats there both awesome suv's


1994 Blazer Sport 5.7 =10mpg
2002 Blazer LS ZR2 =16mpg

 

I checked mine again yesterday: 227 miles on 10.1 gallons = 22.5 mpg. At least 85% on flat hwys in warm weather. But I confess to driving like a wimp in my stock '98 LS with 112,000 miles. Even being wimpy, I sometimes get 18.5 mpg. I think the stock S10 Blazer is basically a 20 mpg truck when driven sensibly city/hwy combined. Mine is anyway.