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Oil analysis at 27K on MY06 2.7L
I decided to sample my last fill of M1 15W-50 which had 5500 miles on it and 8 track days with my wife and I driving back to back sessions. All interstate driving otherwise.
The results were great save the viscosity being a bit lower than it should have. It would appear that M1 in this weight works for this number of track days, but I don't think I'd go any longer.
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2013 Boxster S
2006 Boxster--sold
1999 Boxster--sold
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