I recently sold a mint low hour L3400 and used the money to buy a M6040 which I trailered back to Wyoming from South Dakota. Most of the maintenance was up to date but we need synthetic oil here in frigid wyoming. I tried to find the crankcase oil capacity in the manual and on the net, Tractor data lists it as 8.5 qts. Coleman equipment list 11.6 qts. I put in 11 qts and it was only 1/4" showing on the dipstick. I had to add another qt to hit the top mark. The dip stick is intact. what is the amount? Could I have the wrong dipstick? I also note that oil change intervals are 300 hours which seems too long to me. This would be equivalent to about 15000 miles on a car or truck. MY Kubota L45 is 200 hours and some tractors go to 150 hours. My Dodge Cummins with similar capacity recommends 6000 miles which is about 150 hours. Opinions on this?