Wow, kids calm down here! I am seeing another trend not only in this post but others. That 1. Search it yourself or 2. Sacastic replies or 3. Unmeaning to be unhelpful or 4. Will leave this one out. It may be bettr in the future to reference ings instead of being gruff and down right dirty seemingly tired of the new posters out there on this forum. Which may be unannounced toyou 1. Know how to use a forum 2. Have been around as long as you. To respond similarly to it as such.
I have posted many articles on this such thing and have researched it in the past. Most likely it is winter gas causing the difference in milage. IE Winter gas has a higher Ethanol percentage vs summer blend. See the articles below for more information and consumption.
Summer Blend vs Winter Blend whats the difference?
Or the following post: [Insert Link]
or reference you can also see the following [Insert Link] which describes the search function of the forum if you have not already done so.
To either side there is no need to be a dick about it. We are all here becuase we either like the 4Runner or own one and want more information on the things we can do to it. I for one know from other forums and years of bing pn them IE fjcruiserforums, landrover forums, pinzgauer forums, different gun forums, UsualSuspects.net... That you will always get some similar questions and that simple link to a previous discussion that could have been hidden by the vast amount of posts is much more helpful that using a search function. If you reference something like writing a report put a link to what ever the heck you are referencing instead of starting hey dummy look it up, I wrote about it. Well what did you write please, interested I would like to see said artcles or the such to further my knowledge on the subject. Just as my know,edge of the Medical or Firearm side or experiences may be of use to you.
I dont want to sing kumbaya so lets

arty: on and get back to stuff that is more worth while.