I'm new to the air cooled RT model. I just purchased mine in January with 1500 miles on it. I now have just over 4000 miles and have had to add 2 quarts of oil over this span. Is it normal to have this high an oil consumption rate? Is this something that will diminish over time or is this something that I will have to live with. I have never had a bike use this much oil either Japanese or my K 1200 GT. Thanks