Ford Repair Questions? Ask a Mechanic for Answers ASAP
Hello, yes it would absolutely void any warranty and do damage to the fuel system and catalytic convertor. Off road diesel has a red dye in it and is only meant for farm equipment and such since they dont use emissions components.
Anything to do with the word off road or red dye will void the warranty most likely.
Do you need more help with this concern? Any way ford can void a warranty they will void it