Fwiw, when I got my civic with 2 miles on it, I immediately put a new filter on it and a frag mag/ mag drain plug. I changed my oil at 500, 1000, 2000, and 3000 miles and cut the filter in half to see what the frag mag caught. The 500 oil change sparkled so much it looked like Edward Cullen had been cremated and sprinkled in there. 1000 was about half as much, 2000 was almost completely clean, and 3000 there was nothing in it at all.
Z motors may be different, I'm no expert. But I wouldn't want to take a chance of all those metal shavings floating around in my baby's insides.
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I am here:
http://maps.google.com/maps?ll=28.354351,-80.686575
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