These Cat engines sure use a lot of Oil. Was two gallons low today only got a gallon out of the drum. Ran 250 miles to STL checked it and was two gallon low again. If I wait a week its 2 gallons low seems like a lot of oil to me. Would think that the Cat Engine throws the oil but can not find any sign of it. the old Cummins engines never used this much oil. Seems like if OD saves money on Cat engines they surely loose it by using all this motor oil.