It's funny you brought this subject up. Since I'm still learning about this totally different machine that what I am used to riding, I checked my oil one day and found it down a quart also. Went to dealer, told him my problem and he didn't understand why since it was a new machine. Now this was the parts guy. He actually gave me a quart of the old synthetic oil since it was his last quart. BRP has gone to a "Blend" oil now. I don't know the reason. Probably because it is so darn expensive. So I did add some to bring it up to where I thought it should be. About a week ago, I went for the 3,000 mile check up and they changed oil for me. The mechanic told me don't fill the tank up to the top of the mark on the dipstick. He said keep it down a bit. I said ok but didn't know the reason why. So, it must be ok to have it down and not up to the top level mark on the stick. He also said, "Make sure when you do check it it is hot", like Lamonster said. I'm still finding strange things about this machine that I have never encountered before.