Ok, thanks. Didn’t know that so will check once I finally get the head off. Is there much that can be done if it is worn out?

Thanks johnlad, I’ve started to remove the head but can’t for the life of me undo 2 of the head bolts so have ordered a larger breaker bar and socket!

Evening All, I’m new to the forum and hoping someone can help me. I’ve got a 1995 110 300tdi with 300,000km on the clock. It was a CKD built in SA and shipped back here. I’ve owned it for 20 years so know the history and it has been serviced every year. Last year my oil pressure switch blew...