In my old 86 2.3 I drove it like a grandma (exhaust leaks made it almost unbearable to rev past 3k) so I got in the mid 20's in the city and low-mid 20's on the highway. but the quart of oil it would drink every 50-75 miles more than made up for the excellent fuel economy <img src="/forums/images/graemlins/smile.gif" alt="" />

In my 88 2.6, I got about 15 on the highway to charlotte last weekend. I had a leaky injector and a full load (gear and a set of 5 tires&wheels in the back).

A few months back, I tried running a little acetone in my tank (an once per 10 gallons) and it seemed to make a small increase in mileage.