I know there are 2 oil plugs on the 1330. One for the engine oil and one for the trany. Now my question is... why drain the oil out of the engine? The way I see it the trany plug is lower than the engine plug and I understand this is all one oil system.... If all the oil will come out of the trany plug there should be no need to undo the engine drain plug and save on the price of the o-rings... Just a thought. I think when I do my first oil change I will try this and see if all the oil comes out the trany plug...