I figured out that I have two ticking problems. One is when the engine is cold or sat overnight (yet to be resolved) and usually goes away (for the most part) after the engine has warmed slightly up. The other that I have resolved happened when I got off of the highway when the car was fully warmed up and turned out to be bad catalytic converters. I got my cats changed out at 78,000 miles, just 2,000 miles shy of the federal warranty and if I had not just parts would have been about $3,500. It fixed half of the noise. I am convinced that the other half is poor oil circulation.