Ok I know this has been discussed before. I have just installed a used Eaton 10 in my 1556. There was a napa filter 1084 on it. I would like to know what would be the correct filter for this and what is the recommended oil. After reading threw the Eaton manual, it says the filter should be filtering 4.5 GPM. Im thinking the 1084 might be restricting the flow. When I pulled the old pump the oil had that burnt smell to it. I want to make sure I'm using the right stuff.