engine damage

I have a 2004 WRX wagon (more or less stock) with 108k miles (which I love and is otherwise fairly good shape given it's age). When I was driving last week, I hit 5k RPM and suddenly the engine started making a clanking/knocking noise. I promptly brought it to a mechanic. To my untrained ear...

2003 with blown head gasket dont know were to start.

So on my stock 2002 WRX wagon I got my 60K service done at Subaru Stamford earlier in the year. Since then the car reached 79 K or so. All this time I have been getting the oil changed every 3K or so with the last few times the oil coming out pretty dirty and the engine performance...

My car was having problems and the engine started making noise. We think it's the rods in the engine. How do i check the engine rods? Preferably without having to pull the whole engine out. Are there any shops near Riverside, CA, that do work on Subaru's and aren't overpriced?

I just purchased a WRX and decided to take it to Quick Lube for the first oil change (first time I haven't done it by myself on any car). I got the correct Mobile-1 Filter and asked them what kind of oil they'd be using. They put in 0w-30 Mobile-1. My engine was hot and they drained it after it...