alright, this is my first post here. Ive been lurking around for awhile mostly to help my friend with his Volvo. he has an 06 s60 2.5t with 123,000 miles. So forgive me if some of the info sounds vague. He said the low oil pressure light came on, he took it home right away. He started it up the next morning and the light did not come back on but he said it "sounded like a diesel". He drove it to a shop, they say the pcv breather hose needs replaced. He had them do that and change the oil. It runs fine now but the top end does sound a bit more "clicky" than usual IMO. What do you guys think the next step we should take is? he's on a bit of a budget and Ive got a decent amount of experience is repairing my own cars, but never a volvo.