Here is my favorite website for comparing fuel economy of different years, makes, and models. Gives you a good reference point of what your vehicle should get according to the government tests. http://www.fueleconomy.gov/feg/findacar.htm

90 Montero, 2dr, AT, V6, LSD, AC, KYB shocks, bouncy seat, 182K miles, JDM engine, 87 Starion seats, tow hitch
http://www.geocities.com/idahojack03/Index