I changed the oil in my l2900 and the owners manual said it took 3.7 quarts, while the kubota web site said 5.8 quarts. Anyhow, when I drain it I got approximately 5.5 quarts out. When I refilled it I first put in 4 and it was low on the dip stick. So I put in 5.5 and now it is approximately 3/8 to 1/2 above full on the dip stick. I am assuming I need to go by the dip stick and drain a little off. What is the deal with the capacities in these. Thanks