EC135  

If your fuel system seems to be erroneous in readings, ask your mech to check calibration.  One way is to add x amount of fuel fuel from a known amount and check if fuel indicator increases accordingly.  Otherwise I believe there is a calibration component.   One thing to have more fuel than you think, but something totally different to have less than indicated.  One thing for sure is the fwd xfer pump light.  When it comes on, usually after the aft forward flight, and you suspect faulty fuel display, be looking at LZ