Lately my truck has been burning through fuel like it's going out of style. A few weeks age I took it on a long road trip and it ran fine, but lately the back and forth to work has been killing my wallet. Any ideas why? I plugged in my programmer and no codes came up, so I returned it to stock settings. I also plan on cleaning my air filter, changing fuel filter and even an oil change even know it's not quite time. What else should I do or look into. Any help would greatly be appreciated.

 

What's the year, make, and model; how many miles on the vehicle?

 

driving habits? city commute? quality of gas? may not be anything wrong with the truck itself.

 

My truck is a 2003 F150 Supercrew 5.4 with 84,000 miles on it. I've been commuting with it lately, not in stop and go traffic or anything like that. I do tend to have a lead foot at times but most the time I use the cruise control. I usually use just the cheap unleaded gas, and will pump some premium through it about every other fill up.

 

What about your plugs?

 

Just put new plugs and COP's on about 2 months ago

 

why do you put premium in it? I was told we were suppose to only put unleaded in our trucks. do you notice a difference when you put premium in it verses unleaded?

 

I don't think that's true. Idk though. If it wasn't good for our trucks why would they sell tunes for 85 octane to 95 octane? I run premium everytime I fill up. I see a little better mpg.

 

It's not good to run above 87 Octane unless tuned for it, goes the same way If your tuned for 93 you shouldn't run below 93.

 

I only run it because it's purer and burns better so it also cleans my system. It's like buying octane booster... I also use a fuel system cleaner about once a month.