Ok, I have upgraded from an xr 400 to 06 crf450x. I see that the oil changing process is different, but I get the basic gist. Just not 100% sure what to do. Questions: 1. Which oil to use in each side. 1040 and atf? 2. how much with filter change and how much without filter change 3. Just fill, and check level? or Fill, cycle engine, check?