I drive an A6 C4, 150 hp. now I have read that there are some contributions about e 85 and now I ask myself all the time if I am like my audio (work equipment without any frills) tomorrow morning to the pump drive and keep the E 85 hose for 50 L ?? can this go well or I have to change something on the control unit first. following background; the car has been driven by opa for 11 years (rolled). one tells the sprit yes also purifying effect of the power ect pp. and then the cheap purchase price! that’s what attracts me. but I don’t want to break it either. can anyone give me advice ??