Just had to add another quart of oil at 1600 mi. Had the oil changed at the 1K Service, and it was over a quart low then. This is using over a quart every 1K miles. Is this going to slow down as I get more miles on it? Hope so. Had synthetic put in it at the 1K and my dealer charges about $12 a quart for it. Which brings me to my next point. When I bought the bike, the dealer told me I had to use Harley oil to keep the warranty. If I changed my own oil, I had to bring them the receipts for my purchase of Harley oil should I have a warranty issue. I don't see anything about this in the manual. Are they blowing smoke up my rear?