Originally Posted by
Julian
A mate (from our group) and myself did an experiment in our PA28, 2 flights upto about 4500, first without leaning and second with. We got from 11 USG/hr down to 7.8 USG/hr, so quite a saving on a long trip
On a four hour flight it is also the difference between 1:45min of reserve and 0:06 minutes
