Since you're talking thrust on a multi-engine plane, you should also consider putting some right thrust on the right engine(s) and maybe a little bit of left thrust on the left engine(s). Reason: saving your plane in OEI condition.

If you loose an engine on a multi-engine plane, you will obviously have adverse thrust. Imagine, for example, losing the left engine on a twin. That right engine itself will have a natural torque-induced yaw to the left (as nearly all our engines do), and it is on the right wing, so it will pull the right wing forward- more left yaw. There may be too much yaw for the tail/rudder to counter, which would result in the tail stalling and your plane spinning to the ground.

The left engine would require a bit less outward thrust as its natural torque-induced left yaw will somewhat counter the right yaw caused by the engine being left of the CG.

With or without outboard thrust, throttle should be reduced if you loose an engine to avoid stalling the fin. Outboard thrust gives you a little margin to tolerate more throttle during OEI. I would recommend 2 deg. on the left, 3-4 deg. on the right.

Check the twin/multi forum for more.