On a relatively flat hwy I've seen close to 40mpg. Going up into the mountains it's at about 24-26. I wouldn't find it hard to believe that at 70-75mph the 2.8 would get 30+mpg.

 

after seafoaming the gas tank and the crankcase, i am going to change my oil...if im not seafoaming through the intake, do i still need to change my spark plugs? thanks

 

nope its true i calculated it out. at 60mph cruise set i was at roughly 35 to the gallon, i had just filled up at the gas station exactly 1 mile from my garage and it came to 15.1XX gallonsi took a trip with a friendup to wisonson about a 130 miles each way, by the time i got home i was donw to a bit over half a tankand had done about 250ish miles on the trip odometer, i drove the car the rest of the week and when i went to fill up again, i filled up with 14.5 gallons and the trip odometer still not reset showed 420miles. which i not only the most ive ever gotten out of a tank but also the most time iver spent on a highway. the rest of the tank lasted me roughly 160-170 miles which is about right for only city driving for me during the summer.

 

going up a hill or a mountain you will not get 24-26 mpg...

i can see 35 mpg on a flat/downhill road but thats as leniant as i will go for u guys.

 

haha, mcgovs, you have a 1.8T, stop confusing me. you still won't get 24-26 mpg going up a hill though