Just cut open my filter after running a filtermag SS365 on it.
For those that don't know it is a magnet you put on your oil filter to collect metal deposits in your oil.
http://www.filtermag.com/
Was on my LN106 Deisel Hilux
Happy to say it did collect some tiny, tiny, tiny deposits so it does work; even more happier that there wasn't heaps
I tried to take some pics but they didn't really show up to well.
The filter was cut open with my dads tin snips so it didn't give me a false reading.
If you use a hacksaw or similar it will make a heap of filings that will stick to the magnetic area; giving you a false positive
All in all happy to know that these abrasive particles are not floating around in my engine
Cost = $89.95 NZD + Freight
I got mine straight from the dealer in Christchurch when i was there and it cost me $75 Aus