Grizz oil is gone?

Hello
So at thursday i changed grizzly oil and oil filter filled it with 2.2liter of oil dipstick shows normal so far so good. I rided with it 10kilometers yesterday and put it to garage. Today at morning oil level is again at normal mark and again i did 11km ride and put to garage. After 20mins i checked oil and it was lower than lowest mark so i thought where the hell mine oil is gone? Well i thought maybe its some where inside engine i started it let it work a little shut it down and after 1hr i came back there was little more oil but still at lowest mark where at morning it was at perfect middle mark. What could be the problem? Im sure its not burning oil since before i changed i never had to ADD oil it always was up to normal. And i havent seen any leeks or something like that