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      04-21-2021, 06:14 PM   #2256
TX
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Drives: 2009 ///M3 E92 APW 6MT
Join Date: Dec 2010
Location: South FL

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That’s a very good question. My viscosity was 95.7 after a 1k mile change and 90.7 after a 4k change. That doesn’t add up with a 14k mile change on castrol 10w60
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