I have that same start up ticking. It only lasts for 2 seconds and it is year round. I tried many different filters, different oil, zinc additive in diesel oil. It is there most of the start ups only. But sometimes not. I just live with it. Car has 103,000 miles and is babied and it looks it and acts it. Could this be a chain slapping although it sounds like a lifter. It is only there at cold start up and 90% of time. Help.