Thinking about this as I changed my oil today. I bought 2l of Bel Ray Thumper oil and as I was changing the filter I decided to put it all in the bike. I think it's a little more than 2 quarts. In a wet sump motor over filling will mean the crank will run in the oil and create too much oil pressure I take it ? But in a dry sump most of the oil is kept in the frame and only so much oil goes to the motor so it's not as crucial ? I see most guys put two quarts in anyway. I have a long trip coming up and I have noticed the DRZ use 200 cc or so if you stay above 70 mph.