the RAAF always has flown its H models on a lower TIT setting which increases engine life and lowers fuel consumption
...When I was a young lad, I thought that we often flew at the 'higher TIT' than other Alison T56-15 operators. Depends what you mean about 'Lower TIT'...I seem to recall that it was common to LRC at max continuous - and without the Tanks fitted, ISTR that we out performed (WRT range) those with Tanks - in so far as fuel used for (LRC) range.....but too many beers have passed since then.