In a previous existence I used to work with military helicopters. To cut down on logistic chains, we would often use one type of fuel (F34 with FSII - broadly the same as JET A1) for both the turbine powered aircraft and our diesel support vehicles.
I'm not sure I would be playing with fuel types in a pathetically old school Lycoming/Continental design that should have been consigned to the scrap yard in the early 70s.