Hey guys,
I have a 98 GTP with about 156K. I bought about 4 months ago and have put about 4500 miles on it. I drive it on the interstate 95% of the time. I've noticed that I am consuming about 3/4 - 1 full quart of oil in that time. I am not entirely sure what would cause this. I was thinking bad intake gaskets as I know these are notorious for failing. However, I am not sure if those could cause consumption. Any help would be greatly appreciated.
On top of this, IF I had to replace the intake gaskets are there any other items I would or should need to do while doing it? The guy I bought it from said the front valve cover had been updated per a GM TSB, which I did confirm. However, I have a loud engine tick/knock on acceleration. It doesn't do it while at idle. This happens even when the oil level is full. I have been told that the lifters can flatten out over time and cause a tick? I am not sure on this. I was worried it was piston slap but it definitely sounds like it is under that front valve cover. Any guidance on this issue would also be greatly appreciated.
Thank you.
