Hang on. Check of understanding. Stratoflex Products Division is part of Parker Hannifin and is a subcontractor to Pratt & Whitney who is part of United Technologies Corp who build the F-35B engine with Rolls-Royce Plc. (Parker Hannifin would be the company that built the faulty 737 rudder actuators some time back.)
Anyway, I've found out what the engine runs on.
