I have a 99' Acura RL with 145,000 that's doing exactly this:
http://www.justanswer.com/questions/...they-put-mobil
I did not put Mobile one in it, but I did start using Fram oil filters around 9K miles ago when the problem started. At first it was just a mild tick, big deal Honda's do that. When I got the thing you could not tell it was running. Now it ticks just like noisy lifters but real loud, almost a knocking. It's pretty bad. Worse than any Honda's usual ticking that I've heard before. It does not get better when the valve train warms up either.
So, I'm wondering, is there such a thing as an oil filter check valve that prevents oil from going back into the block? Would that cause engine noise?