MOBIL1 has a bit of history with ticking lifters.
try valvoline SynPower in 5w-40 (autozone) and your ticking lifetr may go away (its worked for others).
Also a 30 weight is a bit of a thin oil, add to that the slippery nature of syns and the fact that MOBIL 1 specs out the visosities of their 30weights at the bottom end of scale that they are still allowed to call 30 weight and you are asking for a leak.
Go to a thicker viscosity in another good oil, like ChevronSupreme SYnthetic 5w-40, Valvoline Durablend 10w-40, ValvolineSYnpower 5w-40, Kendall (yes Kendall) 5w-40 synthetic.
Fred...
