Thread: Break-in period
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Old 11-07-2006, 04:04 PM   #3
RandallNeighbour
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Join Date: Jul 2004
Location: Houston, Texas
Posts: 7,243
While I am no expert, I have heard that it's not good to go from synthetic to mineral to synthetic oils.

So, the factory filled Mobil 1 is sythetic and you're going to go to mineral and then back again?
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