I noticed my truck was running rough. I checked the oil and noticed it was a little lower than I expected. It needed an oil change so I changed it. It didnt help. I also noticed the coolant was dark in color not like normal. I have been playing around with my quadzilla so the first thing that comes to mind is a blown head gasket. I also noticed some bubbling aroung the block where a pulley is mounted underneath the alternator. Is this really a blown gasket? How much is this gonna cost me. I guess I should get studs too.