Are you filling it to the upper line on the dipstick or halfway? The upper line is the maximum recommended, not the optimum level.I have been checking my own oil consumption - according to recent figures I've taken, I burn a pint every 200-250 miles.
Some years ago something I read on another forum about how much oil should be put into an engine got me thinking. Before that I had always filled engines to the upper mark and topped them up when they reached 1/2 way down, every couple of fill-ups. I tried putting the exact amount of oil Honda specifies into my GoldWing's engine and it came exactly 1/2 way between the upper and lower marks. I decided to try running it with the oil at that level for awhile to see what happened. Miracle of miracles - its oil consumption dropped to about 1/2 litre in 6,000Km.
When I next changed the oil on the GL500 I had at the time I again put in the amount the book said and found the level about halfway between the marks so I left it there and that engine's oil consumption dropped too.