U4 takes “green” to a new level. Not only are the vehicles green but the fuel they use is also green. Converting a vehicle to use ethanol (E85) is inexpensive and easy to do. Ethanol (E85) is a renewable resource and cost-efficient. U4 then passes the savings on to you. Other benefits include the positive effects on the air we breathe and on the environment. U4 is especially pleased to be able to achieve savings for you in an environmentally friendly manner.