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I had the same large quantity of metal in my first change (100 miles).
You may want to research using synthetic before finishing the break in period.
I thought the sooner you switch the better, but all the mechanics I've talked to said not to do it until the break in period was over. Synthetics are so good at stopping wear, they actually stop the break in process.
I am by no means an expert, just passing on what I've heard.
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um........ ya.... 
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