My old 335i had an oil change every 7500 miles or so. People sent their oil during similar mileage to Blackstone for analysis and 99% of the time, oil was still pretty good. 10k miles would be attainable on single oil on 90% of the cases, some even more. Not saying you shouldn't make early oil changes, but saying it might not even be necessary.
Going on WOT on it used to burn oil faster than the times I didnt, would need to add half or a full quart of oil in between oil changes depending on how it was driven. I also had almost 130k miles before I got rid of it.
Going on WOT on it used to burn oil faster than the times I didnt, would need to add half or a full quart of oil in between oil changes depending on how it was driven. I also had almost 130k miles before I got rid of it.
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