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      02-04-2016, 01:30 PM   #1
hsc1102
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Drives: 2010 X5M
Join Date: Mar 2015
Location: USA

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5w30 Synthetic Oil Brand Mixing Question

I own an X5M, but don't know much about engines so forgive the elementary level question. Is there any harm if I top off my truck with 5w-30 by Mobil vs the 5w-30 that the dealer put in?
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