I have a 99 GP SE with the 3100 engine. When I start it up in the morning, or when it sits for about a day without use, I hear a knocking sound. It is not too loud, but loud enough to hear outside the car. I thought it was the power steering pump, but no sure. Steering seem to be fine, but I do see PS fluid on top of the PS pump after a few days of driving. I wipe it off, and it's there again in a day or so. But off that, it seems to be coming from the block???? I use Pennz. 10-30.....Should I switch to synthetic first to see if that would help the knocking sound. After about 15 minutes of warming up, it does go away. No clue why it does it.

Just thought I'd post it and see what flys back my way.
Thanks