Conventional oil would cause lifter ticking in the winter for 15 minutes in my engine and in most 2.7's and Hyundai says it's normal and will not damage the engine if it goes away once warmed up, which it does.
The oil was Quaker State Green Bottle 5w20 or 5w30 (Can't remember) and the filters at that time I tried were Hyundai OEM, WIX, and a Canadian Tire branded filter. (Could have been Quaker State style filter at that time now they are Champion labs I think)
I was talking about synthetic in this thread causing it on start-up for a few seconds in the summer and 15-30 seconds in the winter.