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BMW 3-Series (E90 E92) Forum
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Blackstone Labs: 325i oil analysis at 65K miles
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10-25-2010, 07:01 PM | #1 |
Captain
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Blackstone Labs: 325i oil analysis at 65K miles
I bought this Arizona car, 06 325i, over a year ago with 59,000 miles. It had been dealer maintained, with I believe just the computer prescribed oil changes, the last one 10,000 miles before I bought it.
I had the indie shop that was now selling the car do an oil change, BMW 5w30. After 1,000 miles with 3 tanks of Techron to flush the fuel system, I changed out the oil for Mobil 1 0w40 (it idles smoother in the very high temps here.) That fill was in for 5,250 miles and this analysis is on it (stock oil and air filters.) I will follow Blackstone's recommendation and change at 7,000 miles. Next lab at 90,000 miles or as I get ready to sell it. Pretty much confirms the conventional wisdom that 7,500 miles between changes is optimal for a NA (I did the same on my E46.) |
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analysis, blackstone, lab, mobil 1, oil |
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