If your oil filter is original, it will have a copper line from the oil galley on the bottom driver side of the engine to the top of the filter. It has a piece of flex hose that will be brittle. Jim Carter sells this in a kit with the flex line for the oil pressure gauge. It is part no. mb141 http://www.oldchevytrucks.biz/47_55/t1.asp?page=118 The filter you are talking about is probably part of the fuel pump. There is an element available. Jim Carter has most of the parts you will need. A 53 would have manual brakes so it doesn't make any difference if the engine is running. You are probably out of brake fluid if the vehicle has been sitting for a while. The master cylinder is under the driver side floor board. There is about a 4 inch round plug in the floor board that you pry up to check the brake fluid.