The first thing I would try is an oil change, but I would make sure the filter is of good quality: Motorcraft, Purolator, Wix. These all have anti drainback valves. I will not use the orange can of death as an oil filter on anything. A friends truck did the tick thing till it warmed up all the time, did he complain. I was over one afternoon when he was going to change oil and I noticed that he had an orange can of death on the counter next to the oil that he was going to put in. I took the filter on him and went home and left it there. Grabbed a Motorcraft filter (same engine) from my stash and brought it back to his place and put it next to the oil. He did the oil change and started it up and no more tick. He was a happy camper.