It is a gasoline engine. Flex fuel means it can burn an E85 gas/methanol mix and also the current E10, but believe me you won't want to run E85 unless you have no choice, the engine power and fuel mileage is greatly reduced on E85. Do not run on diesel.
Search Dodge Ram 1500 Questions
Dodge Ram 1500 Experts
Related Models For Sale
Used Cars for Sale