So, back to the question at hand.. What size wheels/tires? Big system in the trunk?
tri-bar pony rims 16 or 17 inch rim?
one 8 inch subwoofer in the rear.
Dr. White95 suggests you change the fluid in both the rear end and transmission. It breaks down over time and loses its lubricating properties causing more friction. That can hinder performance and kill gas mileage.
Going with what you and Chris said about the diff fluid for sure, but tranny is rebuilt and is under 10k miles on rebuild.
this is why you get bad mpg
Testing purposes at this point. It's not like I run around at stop lights pressing the pedal to the red line for shits and giggles. -___-
0-60 I did a few times for comparison to a friends police crown vic but also to see improvement inbetween cleanings.
Since these 0-60s and rev limit testing I haven't monitored mpg, so it's unrelated, guy.
intake: sounds like you covered the bases. maybe clean the Intake Air Temp Sensor While you're there (you can use the same MAF cleaner you used on the MAF)
Ignition: Clean distributor contact points, inspect wires, replace spark plugs, replace coil (if needed), clean battery terminals, clean grounds (if needed)
Fuel: run a can of seafoam through the car's fuel (fill with premium this one time) and replace the fuel filter.
Exhaust: ensure your smog equipment is functioning properly (no leaking at the EGR joint on the intake), ensure your pump is functioning properly, make sure your cats are not clogged. (do the cats glow red after driving for a long period of time). Replace your o2 sensors.
Engine: Replace oil and filter.
Drivetrain: replace transmission fluid (and filter, if applicable)
3rd member: replace diffy fluid (dont forget to add ford-racing friction modifier on the re-fill!

lol)
suspension: balance and rotate tires. Check pressure
Just bought spark plugs today and wires, but can't put them in yet (work all day tomorrow).
But I'll clean points too.
Fuel Filter replaced a month or so ago, but I'll seafoam it.
Smog works great, no codes at all!

also my cats are clogged though should go (but won't). They don't glow red, I've checked.
o2 sensors I'm putting off for now.
Transmission rebuilt less than 10k miles ago, not a problem. Though it shifts hard?
Diffy fluid is a good idea!
Oil and oil filter are new, done less than 200 miles ago at this point.
I'll check tire pressure, but last time it didn't make a marginal difference when I aired them up.
Your car is almost 20 years old, and if it's still stock. It's got the stock motor, and that motor with the amount of miles on it isn't going to perform to brand new specs
Yes it is.
The motor is actually a new-used motor, it had probably around 100k on it, the last one was over heated to death by my brother when he owned it.
I don't expect it to perform amazing (though everyone else's cars on here get great MPG!) but 16 or so is still crazy low on the highway.
What speed are you going? Is speed constant or 50,90 and back down? What is elevation and does elevation vary? Tires? Which gears? Are you sure?
70 mph, sometimes 60, typically not, I drive consistent.
Elevation does vary, it's an 8 mile trip there and back all highway.
Tire's are stock tri-bar ponies, can't remember if they're 16 or 17.
Stock gears, 2.73, I believe?
Even if I weren't sure, I would still be happy to get more MPG, we all would!.
Sorry to those I didn't reply to, there were a lot of responses!
Also anyone curious about the tires/rims, here's my introduction thread w/pics:
http://sn95forums.com/showthread.php?56056-Helloooo-all!
On a side note, today I picked up a 03 center console; CUP HOLDERS!
and I bought all new Rotors, Brake Pads, and Rear Calipers since one was wearing uneven.
also getting brake fluid.