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Thread: oil changes

  1. #1
    cyanjester
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    oil changes

    How many of you are changing the oil at 7,000 miles or 6 months vs. the recommended 15,000? There is strong opinion that the 15,000 is more of a marketing gimmick & not good for the car. I have a 2003 Z4. Thx


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    U never know

    Until u do a UOA. All parts wear differently with different drivers.

    Today's oils can last you 20k+ if you drive all hwy.
    Heck even dino can get you 5K on stop & go with no issues.

    But only a UPA can confirm this, not just rule of thumbs or idiot lights which is usually based on mpg.

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    Re: U never know

    i personally have seen bmws with 200000+ miles that followed the bmw schedule. i still dont care. ill change it when they tell me plus once or twice in between. i just feel better about it. call me crazy

  4. #4
    Bob
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    Synthetic oils resist carbon build up and break down much much better than dino oil and thus provide real extended protection. Military aircraft and long haul truckers will chnage filters and oil based upon oil analysis rather than set intervals. That said a "extra" oil change between BMW interval is cheap on a $50K car.

    I do an extra change....works for me.
    Bob

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    by the book

    I figure its their warranty, so let them set the schedule.

    Actually, I know from other engine experience that a modern engine (even from GM) can run 5,000 hours on one oil fill, with good filters and of course good oil. They have been pushed over a year of continuous running, in electric generation duty. While that duty isn't as strenuous as driving a car/truck, it does involve acceleration/deceleration and of course constant running for over 8760 hours (per year).

    Now 5,000 hours at an average speed of 30 MPH (My trip computer says I'm averaging closer to 40 MPH at nearly 30k miles total), would be 150,000 miles. If a GM engine can do that, I think the BMW engine can go 20,000 miles between changes, which equates to 700 hours of operation.

    Of course really heavy duty, like track time, should shorten the time/miles between changes. But then the computer is supposed to figure that out, too.

    I doubt if we'll see oil-related early failures on these cars - at least not before 100k total miles. So I'm saving my oil change money and sticking to the factory/car schedule.

    Mike Mc
    '06 3.0si coupe

  6. #6
    Terry
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    How to re-set oil change computer

    Hello,

    I purchased my 03 Z4 about 6 months ago and had an oil-change today. Does anyone know how to re-set the oil change computer on this car?

    Thanks!

    Terry

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    Re: oil changes

    I change at mid change meaning every 7500 minimum.

  8. #8
    Vince
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    Re: U never know

    I'm assuming all you purchased your cars? If you lease it really isn't an issue... If i had purchased the car and meant to keep it for a very very long time, i'd change the oil every 7K miles or so, depending on what the computer says. I've had a few BMW's and it rarely goes to 15K miles. I think this would only benefit the car from failing when it has high mileage...

  9. #9
    Joe
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    Re: How to re-set oil change computer - TRY THIS

    Z4
    2003-2006
    Press and hold left hand button between gauges. Turn ignition switch to the "ON" position. Keep holding button until "OIL SERVICE" or
    "INSPECTION" is displayed. Release button. Press and hold button again until "RESET?" is displayed. Press and hold button again for at least 3
    seconds. Turn ignition off.

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    Re: How to re-set oil change computer - TRY THIS

    Can anyone tell me where is the "left hand" button?

    thank you

  11. #11
    Worm
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    Re: by the book

    "I figure its their warranty, so let them set the schedule."

    So you're not considering what consequences there might be AFTER your warranty runs out? You realize the possible damage is a cumulative thing, right?

    Plus, our Chapter (Dallas) has two master techs as out technical advisors, and both have written in our newsletter about some of the horrors they've seen in engines whose owners strictly followed BMW's recommended service schedule.

    Personally, I look a 7500 mile oil change as pretty cheap insurance.

    The Worm





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    Re: How to re-set oil change computer - TRY THIS

    Do they mean the left most stalk?

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    I've heard the same thing.

    Seems there may have been a Roundel article to that affect too.

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    1 bmw's record

    I have a 98 - 328 live in Ca and drive freeway 72 miles a day.
    The original owner used Mobile 1, changed the oil every 10k and drove mostly fwy in San Diego.
    I bought the car at 105k and change oil (Mobile 1) every 6k.
    The car has 215k miles, runs really well, and doesn't use any oil.

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