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06-28-2010, 08:56 AM | #1 |
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Extra oil change - can you explain it!?
Here is the story: I track the car relatively often (4 track days in May only one in June but 4 coming up in July)
So I like to change the engine oil more often than BMW recommends. After the 1,200 mile service I changed it at 4,200 miles and now at 8,000 miles I went in for another oil change. And here is the thing, the SA was telling me that based upon the "key reading" my car needs an oil change (just after 4000miles), so they did it free of charge?? I am not complaining but somehow worried that the oil could have been deteriorated so much that the car needed a change?!! What is the car actually measuring in the oil? How is it determined by the ECU that the car needs an oil change? By the way no service light came on, nothing was indicating that something maybe not right. Thanks |
06-28-2010, 05:56 PM | #2 | |
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06-29-2010, 12:02 AM | #3 | |
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I just changed my oil with 4,500 miles on the clock because it's been a year since the 1,200-mile service, and was seriously thinking about resetting the CBS (I did reset it with the brake fluid change I did myself), so I could maybe have another tranny and diff oil changes before warranty runs out, but I'll do that myself too. If my car doesn't have a problem (knocking on wood), it probably won't see a dealer again under my ownership . |
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06-29-2010, 08:45 AM | #4 | |
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06-29-2010, 10:29 AM | #5 |
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Even as early as the E30, BMW has used a condition based service reccomendation. The reccomended oil change and service intervals are based on "normal" driving, but the car's computer system will adjust to harder driving and reccomend more frequent maintenance intervals based. I think it's a very neat feature!
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06-29-2010, 01:10 PM | #6 |
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If no light or notice indicates that an oil change is needed outside of the normal intervals, then the only way one would know is if their SA reads the key or happens to stop by a dealer, right?
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06-29-2010, 10:07 PM | #7 | |
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06-30-2010, 11:05 AM | #8 | |
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During my track days I am on the track about 80-100 miles so there is x5 factor for wear and tear compared to normal driving. |
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06-30-2010, 05:24 PM | #9 | |
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06-30-2010, 05:26 PM | #10 |
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What are people seeing on average in regards to the CBS indicator for oil changes...that is people that don't track their cars? On my 335 its about 14,000 miles..
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06-30-2010, 11:56 PM | #11 |
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I know . Rather pay $200 or so a year in maintenance than letting only dealer in town treat my car like a Geo. Plus I enjoy working on my cars, especially the M3. Prefer to leave the doors open in case I really need them, but my goal is to never have to go back. Hope my car cooperates .
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07-26-2010, 05:29 AM | #12 |
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SCREW THE CBS COMPUTER INDICATER
on Everything 15000 mile oil changes is for chumps Change your oil every 5000 miles Brake Fluid every 5000 miles Differential every 7500 miles Transmission every 10000 miles and all the other fluids at 10 to 15K miles Fluid Changes ARE VERY IMPORTANT And for those that ASk for Proof or Why you should do this Smash your head against a Brick
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07-26-2010, 08:55 AM | #13 |
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I don't think asking for proof is an invalid question. If you send you fluids to Blackstone and they come back with an analysis that says the contaminant levels are low enough to use the factory recommended intervals what is there to gain by changing it more often? I'm sure M did quite a bit of research and testing before setting the standard recommended and CBS intervals.
I'm genuinely curious about your response. I understand wanting the car to be in tip top shape but I think your numbers are seriously getting into the diminishing return area. |
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08-09-2010, 07:10 PM | #14 |
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Is there and indicator for all these fluid changes such as differential, brake/clutch, and transmission? What's the recommended interval to change these fluids if one is anal and would like to change it not based on the indicator? Thanks!
oil change differential brake/clutch transmission |
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