Welcome to the Nissan Patrol forum. To post a question and to see less adds on the forum then you will have to register
first. We are an easy going friendly forum so join in the conversations and feel free to ask any questions.
Become a forum sponsor for only $20 and see no adds with faster page loading times and many extras benefits.
Personally I would put a few more km's on this oil then drop it and send it away for analysis. It's fairly cheap. You'll get change from $50
Hastings deering should do it, most oil co-ops should be able to do it.
Its like a blood test for your engine and a very good preventitive maintenance tool. The analysis will tell you what the filings are and where they came from