Fly at 80 knots or less, and dont expect to mount mini guns, rockets and doorgunners and still keep the performance of a slick.
Since the EGT implementation it is the first gauge I check on my regular sweep of the instruments.
Fly it within limits will not result in engine failure. One thing I did notice is pulling power to get into a hover causes the needle to spike. If you don't gain translational lift soon and reduce the torque needed to fly then you will have problems