Iowans know that ethanol is the greener, eco-friendly choice at the gas pump. Now during October, E15 ethanol fuel is also the pink choice at the pump.

The Iowa Renewable Fuels Assoc­iation is partnering with fuel retailers across the state to promote the “Pink at the Pump” fundraising campaign during Breast Cancer Awareness Month in October.

From Oct. 1 until Oct. 31, participating retailers will donate 3 cents for every one gallon of...