Went to take a ride this afternoon and went to check my oil. It was low. Just below the dipstick. My question is how often should oil be added, or should it even have to be added? My knowledge of engines tells me I shouldn't have to add oil, I should only have to change it. I went into the dealer and he told me that at highway speeds the crankcase will pump oil into the crank case breather tube. Whats the deal guys. Is this normal or do I have a warranty issue that I need to address?