Ask Any Jeeper: These Are the Engines You Can Count On

8. Willys Go-Devil (2.2L L-Head I4)

Let’s take it way back. The Go-Devil engine powered WWII Jeeps and helped win the war—literally. It made just 60 horsepower, but it could run forever on bad gas, no oil, and pure willpower.

Simple flathead design, easy to fix in the field, and rugged like nothing else. You won’t find it in a modern Jeep, but it’s the reason the Jeep name means what it does today.