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Thread: William's 330Ci ZHP Maintenance and Project Thread

  1. #941
    Join Date
    Dec 2019
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    Raleigh, NC
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    Quote Originally Posted by t.er View Post
    What are oil change intervals like in Germany? That's quite surprising, I've only ever heard of rod bearing issues with the M engines
    The average consumer will blindly follow the computer or dealer recommendation, which is about 20k Km or once every 2 or 3 years. But I've also read posts of some doing 30k Km, others 15k Km, so it obviously depends on the person. Enthusiasts tend to stick closer to 15k Km, and there are some that go as low as 10k Km, but those are rare.

    In the meantime, pretty much every person and shop around my area sticks to the 5k miles interval. In our local car club, a few do 3-4k miles changes, whereas the "normal" people I've met here stick to 5-7k miles.

    And yeah, around here rod bearings are only gonna be an issue on the S54. Like I said, with US oil change intervals, we don't need to worry about our M54s.

    P.S.: This thread for example is telling the OP that the "normal interval" he should be using on his E46 is 30k Km or every 3 years: https://www.motor-talk.de/forum/oelw...-t5490323.html

    P.P.S.: In miles, the typical German intervals are 10k, 15k and 20k, just for clarification.
    Last edited by Galapolis; 10-16-2020 at 09:33 AM.
    330i Base | Mysticblau | Slicktop | 6MT

  2. #942
    Join Date
    Nov 2016
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    Charlotte, NC
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    2,857
    That is absolutely bonkers. I didn't change the oil in my wife's wagon for almost a year and maybe 6-7k miles and it was sludge city. I try to stick to every 6 months since oil degrades with time AND use.

  3. #943
    Join Date
    May 2020
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    Toronto, ON
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    Yeah, I thought Germans were pretty good with maintenance. Understandable about regular consumers but enthusiasts changing every 15k... wow

    I do it every 7-8k just because that's what I do every year.
    2004 BMW 330CI ZHP (well, technically ZAM)


  4. #944
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    Dec 2019
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    Raleigh, NC
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    Quote Originally Posted by t.er View Post
    Yeah, I thought Germans were pretty good with maintenance. Understandable about regular consumers but enthusiasts changing every 15k... wow

    I do it every 8-10k just because that's what I do every year.
    That's 15k Km, not miles. Added it to every number for clarification. Still too long though IMO. I stick to 5-6k miles (same as your interval). Germans drive less and fuel quality is higher there, but as evidenced by all the failing rod bearings, that isn't enough to make up for their ridiculous intervals.
    330i Base | Mysticblau | Slicktop | 6MT

  5. #945
    Join Date
    Feb 2011
    Location
    Vancouver, Canada
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    How does one get sludge at 6k miles? Maybe itís the climate or how the car is driven?

    I had no issues with my ZHP when I did 20-30k km intervals. Opening up the VCG was met with clean, slick, unworn parts like the cam lobes which are easy to inspect. I do drive my cars to redline on every single drive though. Not every red light, just once or twice when the conditions allow. Haha

    My M3, I do 20-25k km intervals and Blackstone analysis shows average to below average oil/engine wear per km. I have now finally got the advice from Blackstone to swap out rod bearings due to copper and lead spike but mileage wise itís no different than all other M3 bearings with 7.5k km intervals.

    I thought my experiment with Liquimoly Ceratec and/or MOS2 would have helped to extend bearings, but with my testing of over 100k km, that wasnít the case. Maybe that oil additive is better for other engine components which I donít pay attention to. LOL

    Disclaimer: my experience maybe different than yours while using science/tech to backup my claims.
    --Trevor--
    Vancouver, BC

  6. #946
    Join Date
    Nov 2014
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    Portland, OR
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    Quote Originally Posted by Galapolis View Post
    Rod bearings is a common replacement item on the M54 over at the German forums, so I wouldn't really worry about it. Nothing out of the ordinary. Any reason you went with the longer interval? (I might have missed it in the thread) They run really long intervals over in Europe, which is probably why they see rod bearing failures. American E46s tend to get mileages that they can only dream of, thanks to short oil change intervals that are common here.
    Literally just lapsed my mind. I usually shoot for 5-7k miles.

    Quote Originally Posted by t.er View Post
    What are oil change intervals like in Germany? That's quite surprising, I've only ever heard of rod bearing issues with the M engines
    That's colloquially what I've heard as well; the S54 has rod bearing issues, the M54 is relatively rod bearing failure-free

    Quote Originally Posted by ZHPizza View Post
    That is absolutely bonkers. I didn't change the oil in my wife's wagon for almost a year and maybe 6-7k miles and it was sludge city. I try to stick to every 6 months since oil degrades with time AND use.
    Sludge? Really? Mine's always been dark but good consistency at 5-7k miles, and that's usually at one year intervals.

  7. #947
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    Dec 2019
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    Quote Originally Posted by Rovert View Post
    How does one get sludge at 6k miles? Maybe it’s the climate or how the car is driven?

    I had no issues with my ZHP when I did 20-30k km intervals.
    Maybe fuel quality is higher in Canada? That's REALLY interesting though, central Canada is on the same Latitude as Germany and both you and the Germans chose 20-30k Km intervals. Seems like there might be a connection.

    Quote Originally Posted by BMWCurves View Post
    That's colloquially what I've heard as well; the S54 has rod bearing issues, the M54 is relatively rod bearing failure-free
    I told them the same thing over at the German forums and I basically got stoned because the M54 rod bearing issue is "well documented." But like I said, the issue only exists in Europe, not in the US.
    330i Base | Mysticblau | Slicktop | 6MT

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