My 4-cyl, carb'd 2.6L has been good for 15-17 mpg for mixed driving the last 3.5 years. Unless it's snowy winter, dragging my water trailer, and dinkin' around a mass grading site, then my mileage has dropped to 12-13. I use my Raider like a 1-ton quite often.

1987 Raider - Roxy
1988 Mighty Max 2.6L Turbo - Pearl
1997 Mountaineer V8 - Freddy
2000 Excursion V10 - Freya