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      03-13-2018, 07:24 PM   #1
Happy Jose
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Unhappy Stop Wasting Our Precious Resources!

Stop Wasting Our Precious Resources!

Before I get into it, I want to begin with BMW's CBS or Conditoned Based Service. Supposedly CBS can determine when your oil needs to be changed. It does it using a sensor in the oil pan that measures the service life remaining in the oil.

When you change the oil and reset the Service Interval Indicator, you'll see it adds two years to the current date for the next change. It also adds a mileage interval of 15,000 miles. What this means is the oil is due for a change in either two years or 15,000 miles whichever comes first.

You can easily reset the CSB using this scanner:

Icarsoft Multi-system Car Diagnostic Tool BMM v2.0. It also does the battery registration.

Getting backed to the CBS, two years or 15,000 miles is an initial condition, and it can change based upon your driving style. In my own case, I only put on about 7,000 miles a year, since I have another car to drive. I'm not a hotrodder, so the initial condition doesn't change.

Does CBS really work or is this just some subterfuge on the part of BMW to extend the service interval and save money? Probably not because under the maintenance contract on a new car, the company will change the oil once a year. However, it has shortened the maintenance to three years.

I recently changed my oil at a bit over the one year interval. The oil looked, smelt, and felt very clean. The dimple magnet drain plug didn't have any mental particle on it. I wouldn't have felt a bit concerned leaving it in the pan for another year.

Looking at my maintenance manual, I notice that it recommends changing the sparkplugs at 60,000 miles or every fourth oil change. The 4th oil change would occur at 60,000 miles sticking with the 15,000 mile recommendation of the CBS.

Moving on BMW uses a long-life or extended life coolant. These products can be good for up to 120,000 miles and 12 year intervals. You probably won't own the car when it needs to be changed.

BMW recommends replacing the brake fluid every two years, but I've always felt that the interval should be at least 4 years or more. For the hell of it, I bought one of those brake fluid checkers:

https://www.ebay.com/i/122774354062?chn=ps

This should be intersting. BTW, you can tell a lot about the condition of the brake fluid by monitoring its color. It should be the color of urine, but if it starts to get cloudy, it time to flush the system. The same is true for your own urine.

The Germans have always been known for their mechanical and metal work, and the One is no exception. The coach work is primo, and you won't find better. One gripe I have with owners of German cars is they often seem to think the shocks are worn out at some ridiculously short interval like 30,000 miles. They aren't. The owners are delusional, because they will last 100,000 miles.

I had better stop here; I don't want to keep you up past your bedtime!
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      03-13-2018, 08:37 PM   #2
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I've had my 135i for three years now, fresh oil change when I bought it, since then I have followed the CBS recommendation for my oil changes. The way it was described to me at the dealership was that if the car didn't tell me I needed an oil change after 1 year, I should get the oil changed. If however, it told me that I needed the oil change before the year was up, then I should get the oil change and that the car would determine when it was needed.

For the first 2 years of ownership the 1 year interval came without any mention of a needed oil change from the car. Still following what I had been told, I had the oil changed. This year however, 11.5 months in, the service light came on for the oil change.

Of course I was a couple weeks ago ay from having it changed, but it provided a but if affirmation for me that the CBS is doing something.
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      03-13-2018, 08:51 PM   #3
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If I don't change my brake fluid at least annually I cant play with my friends. I change the oil every 5,000 with synthetic because I am too cheap to buy one of those reset tools.

I guess I am not as green as I thought it was. please forgive me.
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      03-13-2018, 09:01 PM   #4
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As someone who has seen the inside of several engines run on BMW's extended service intervals, I'll ignore them, thank you very much. Same goes for the "lifetime fill" drivetrain; what this means in practice is the lifetime of the component, i.e., put new fluid in the replacement transmission or differential because the old one failed (because of a lack of fluid changes, but who wants to worry about maintenance when you can just buy a new car?)

The simple fact is that "(t)he oil looked, smelt, and felt very clean" is utterly meaningless. If you want to know the condition of your fluids rather than presume, sending a sample to a lab is the only way to be sure (unless you are a tribologist and are performing the requisite testing yourself).

And if you can show me a set of OE dampers that test anywhere near their rebound and compression specs after 75k I'll be stunned; some are done by 50k. There are some aftermarket units that can hold on for longer, but the OE stuff isn't up to that standard. Of course, if you never get them anywhere near the outer boundaries of the performance envelope, it won't matter much.

Coolant may be good for freeze protection for a long time, but as it degrades you can get galvanic corrosion in systems with dissimilar metal construction (older iron block engines with brass radiators are more prone to this, naturally). Brake fluid can look very clear and have dangerously low wet boiling point. Simple visual inspection is not sufficient. Rely upon it at your own risk.
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      03-13-2018, 09:22 PM   #5
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FYI, BMW Service Bulletin 00 01 13, Attachment 5 revised the OCI from 15K to 10K. From the bulletin:


2014 model year vehicles built prior to July 2013 utilized a 15,000 mile/24 month engine oil Condition Based Service (CBS) interval. This interval is triggered by the presence of option code 8KC.

All 2014 model year vehicles produced as of July 2013 will incorporate a new basic interval for the engine oil service. The new CBS interval is every 10,000 miles or 12 months (option code 8KL). The 10,000 mile interval pertains to the gasoline as well as the new diesel-fueled engines of the 328d and 535d.

The Key Reader/ISPA Light application will recognize the production month and/or the respective option code, and specify the corresponding interval and its related maintenance operations.

BMW vehicles’ CBS computes the actual optimum maintenance requirements based not only upon the accumulated mileage, but also taking into account important factors pertaining to fuel consumption such as high or low engine speeds, shot to long-trip driving. Such computations can result in variation’s from the 10,000 mile interval and correspondingly, when an engine oil service will actually display ”Recommended” or “Due.”
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      03-13-2018, 09:29 PM   #6
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"It does it using a sensor in the oil pan that measures the service life remaining in the oil."

Oh is that right! So mileage and the amount of fuel consumption is not considered? I didn't know that.
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      03-13-2018, 10:05 PM   #7
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      03-13-2018, 10:30 PM   #8
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I follow the advice of Mike Miller.
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      03-13-2018, 10:38 PM   #9
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I just smelt it to know when to change it.
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      03-14-2018, 08:21 AM   #10
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This should be fun!
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      03-14-2018, 10:04 AM   #11
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Quote:
Originally Posted by 02Pilot View Post
If you want to know the condition of your fluids rather than presume, sending a sample to a lab is the only way to be sure
Speaking of "wasting our precious resources", here are my Blackstone Oil Analysis results of my oil services at 5, 430, 9079, 14051, 19141 miles.

Unfortunately the oil was not sampled at the 1500, 3684, 4370 oil services, so I don't have analysis for those.

7 oil/filter changes in 3 years/14K miles. Hope this doesn't trigger anyone.
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      03-14-2018, 10:15 AM   #12
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What takes more resources? An additional oil change once a year, or a building a new engine from parts shipped from all over the world.

Edit: You also don't need any special tools to reset the CBS. Takes 5s.

Last edited by MightyMouseTech; 03-14-2018 at 11:08 AM..
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      03-14-2018, 12:32 PM   #13
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Whose lifetime?
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      03-14-2018, 01:31 PM   #14
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Quote:
Originally Posted by 02Pilot View Post
The simple fact is that "(t)he oil looked, smelt, and felt very clean" is utterly meaningless.
In fact, if my oil smelled like smelt I'd be very concerned.
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      03-14-2018, 01:35 PM   #15
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Nice novel.
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      03-14-2018, 02:52 PM   #16
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Let our powers combine ... ?
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      03-14-2018, 02:56 PM   #17
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I believe engine replacement after several 24,000 mile oil service intervals will be more damaging to the environment compared to a 7,500 mile interval without complete engine failure and replacement.

By limiting myself to one engine, I am being environmentally sensitive.
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      03-14-2018, 03:02 PM   #18
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Troll Alert!

Happy Jose a.k.a. Mr Rooty Von Tooty is a forum troll who was banned last year.

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      03-14-2018, 03:06 PM   #19
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Quote:
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Happy Jose a.k.a. Mr Rooty Von Tooty is a forum troll who was banned last year.



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      03-14-2018, 03:19 PM   #20
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Then feel free to entertain him if you want...
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      03-14-2018, 07:34 PM   #21
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Oil: I get your stance on it, it really is one of those "if it ain't broke, don't fix it" items that really depends on your circumstances. My only problem is that with tracking the car, driving at max performance for 20+ minutes around 8 times in a weekend, I personally like the near-guarantee that the oil will perform to its optimum, in keeping the engine from grenading itself at 100+ mph.

Coolant: I also get your stance on that, but the long-life coolant isn't helpful when water pumps commit proverbial suicide every ~80k miles, making it useless.

Brake Fluid: I won't ever risk my ability to stop. Ever. My brakes get bled with the changing of seasons, and before and after every track weekend. Period. I helped my friend bleed brakes two weeks ago, and his fluid was the color and translucency of mud. Gross and dangerous. I'm still picking on him to this day...

Driveline Fluids: Tranny fluid will get changed every 25-35k, diff fluid probably every 50k since I don't have an LSD yet. The tranny changes are to simply preserve the shift feel and precision, and keep the synchros happy.
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      03-14-2018, 08:32 PM   #22
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Quote:
Originally Posted by icegrill View Post
I just smelt it to know when to change it.
Motor oil, diapers, its all the same.
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