[cessnadriver]

Hello ALL,
I'm a new member so I hope this is the correct place to ask this question!
I'm looking into buying a C336 and have a question related to fuel flow.
If half of all fuel going to the engines and the other half returning to the mains, how does the fuel flow indicator work?
If you have say, a Shadin fuel flow indicator, does this instrument show all the fuel going to the engine or JUST the actual amount entering the engine?? If this is the case is the transducer located at the engine, so it only shows what fuel is going into the engine.
MANY THANKS-ADVANCE.
BILLS