iceman-
STOP!!!
sounds verymuch like what happened to my car- you need to pull your oil filter and cut it carefully and check inside- also if you can pull your oil pan and inspect your bottom end-
I lost at least one bearing in the bottom end and now my motor is a complete waste- I need a new one- so do yourslef a favor- I know it sounds like lifters or even valve problems- its NOT!
its the faimed Tour spun bearing usually a rod one but could also be a crank-
trust me on this one- you may be saving yourself about $6000 worth of damage- pull the pan and oil filter and check for metal shavings or chips- mine had an amazing amout in the oil filter- I havnt pulled the pan because frankly I dont want to break down and cry when I do
good luck and hopefully you wont need a new motor because right now 2.5 stuff especially SVT stuff is so expensive youd have a heart attack when I told you how much replacement stuff is!
scot