the item you linked goes in the intake of the V8 - there is nothing similar for the 6, the oil is 'filled' into a hole in the valve cover that has a simple cap on it .... you must be seeing the road draft tube opening on your 235, which is in the block just above the oil pan, sometimes called the crankcase ventilator - it's not reproduced that I know of, you'll be looking for used
Bill
