Well, I wish I could provide more accurate info for you but here is all I have experience with at this point. I got mine from the dealer and checked everything over before taking off for a ride. The oil was at the min marker on the tube. I didn't have an accurate way to measure the dose (oil bottle had no markings) so I just did my best guesstimate. Did a quick pour, checked, still low, quick pour, checked, still low, poured twice as long as the first two, checked, at the max mark. Made me a little speculative about how accurate that tube is. But, I can't say I was in an ideal environment to really judge (ground may not have been as level as needed, no measuring cup, first time checking the oil on the Duke, etc.) I really don't feel I poured in .3 liters (.2?) but I can't say for sure how much. So, I'd say if you're at the min mark now measure half .3 first and add it and check. See where you are at and take it from there.