for me, all i have is full synthetic oil and a K&N drop in air filter so not much really. i just don't run my air conditioning because i put my windows down and also don't smash the gas pedal to the floor ever

 

18-19 is closest, actual is 17-18, city driving mostly, 4.3L auto 2wd 4 door rarely above 3k rpms, if i drive agressive it drops to 16-17, if i drive to san antonio and back it gets 21-22 @ 75-80mph

 

97 2dr blazer i drive to and from work 20 miles a day mostly at a constant 60 mph

 

*i get 18 to 20 mpg sorry forgot to say that...lol

 

well, i drove from Detroit, Michigan to Ashburn Virginia. i stopped once on the 523 mile trip and was getting 23mpg with A/C on low because my dog was dying in the back seat and i was doing 65-70 except for when at the toll booth. that made my trip a good one

 

1997, 4.3, all stock, 4wd, city driving i get about 14-16mpg driving sensably (without smashing the gas), highway i'm not sure since I don't get on highways very often. But since I like to burn the tires, im always smashing the gas and leaving a nice strip down the street so i probably get about an average of 10-12mpg in the city.

*This is based off of a half of tank of 87 regular fuel since I have a slight leak and im not exactly sure where yet. I just know when I fill up i smell gas horribly compared to when i get half full. With a half tank I get 130-135 miles before is completely empty. I got a 20gal tank (i know this because when I first got it, it was so empty that i ran on fumes to the gas station and filled it up and it took 19.983 gallons @ $2.45 a gallon. Cost me $50 fill it)

 

Well I have a update on my blazers mpg. 96 4 door 4wd. city mileage sucks...maybe 18 if I am lucky but the highway mileage is nice 25 mpg easy if I watch how I drive I can push 26-27 its unreal haha

 

Hey guys i got a 98 red 4 dr 4wd blazer and i swear i can be almost on empty and then fill it up with around 11 or 12 gallons and the gague telling me im completely full. this cant be can it?

 

empty usually means 13-14 gallon fill up depending on how long I personally have been on E. i know if i fill up the moment i get the light i have to put 14.5 in almost on the nose. so, if you fill up before empty light that sounds ok.

 

I get about 14-15 mpg. Sometimes a LOT better, sometimes a little worse. I do a lot of hard stops and gun it frequently- believe me, it's not on purpose, but people are always cutting me off or trying to rear end me. Most of my driving is in town. I go on the highway almost every day, but only for about 2 or 4 miles or so, and not greater than 50 mph. I'm not sure about the gear ratios or anything, I'm just starting out, but Neko has the 4.3L V6 with a 3 speed automatic with overdrive.