fuel question from a newbie

[trev]

My 02 tahoe can run on e-85. There is one station near me that has it and its about 30 cents cheaper than regular. I have had the truck a year and a half and have never run it on e-85. Is it worth it?

 

[Eagle]

you lose about 20% in MPG, so it has to be ~20% cheaper to be worth it.