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  1. #1
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    Blackstone Oil Report 4700/52k miles

    This is my first time getting a blackstone oil analysis and just wanted to see what you guys thought and put it out here for reference.
    My car is a 2011 E90 335i so its the first year with the N55 and it has about 50k miles on it. The last 10k miles since I have bought it, it has had the Cobb stage 1 aggressive flash always filled with 93 octane with no other mods.
    I have had the car for almost a year and a half and I bought it off a lease return and it is CPO. The oil change history from the dealership looked like they just followed the CBS and didn't change the oil for 15-20k miles (maybe they changed it more often but just not at the dealership but who knows) so I was a curious to see if there was any abnormal wear and wanted to see the actual condition of the oil after about 5k miles on it. I drive it pretty hard and like most people I was not convinced that the BMW recommended service interval was good enough for our turbo engines.
    Another note is all 4700 miles on this oil was in the extreme cold this winter in MN so I don't know if that makes any difference.

    Let me know what any of the more experienced people think, it looks like they were just comparing my numbers to N54's but it seems like it should be an ok comparison but I am no expert.

    Do you think I could run the oil for longer next oil change? The hot and cold viscosity looks good and the flash point is still very high with no coolant or gas contamination (even though the sample was taken cold at the dealership) so it still seems good to me.
    Thanks for any input!
    Click here to enlarge

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    Looks like you are in perfect shape. I really like Blackstone reports.
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  3. #3
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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    Looks like you are in perfect shape. I really like Blackstone reports.
    Thanks! Yeah, I think if I just stay with the stage 1 map I might try to push the oil change a little longer next time. Seems like the oil is in perfectly good shape.
    If I get a bigger intercooler and catless downpipe and more aggressive tune (maybe some ethanol mix) I will probably do another 5k oil change and do another Blackstone report.
    I really should have done oil analysis on my subaru but I already knew the stock engine was on its last legs so I didn't waste the money lol.

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