Quote:
Originally Posted by ZetaTre
No need to engage in reductio ad absurdum: I never said you knew nothing. Actually I find your posts very informative.
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Ok,let's start from the beginning.I actually like your write-up for the diesel CCV oil separator and i planned to make something similar.It actually becomes necessity with the tune I am developing with some overseas partners.
Quote:
Originally Posted by ZetaTre
It just happened that in this post you made definitive statements on a couple of things which turned out to be inaccurate and I thought it was helpful to point them out.
We all learn from experience...............
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The same way I am mistaken,you may be too.So the correct term would be "statements that I believe are inaccurate"
Quote:
Originally Posted by ZetaTre
Now back on the subject at hand: I was not questioning the fact that the VTG control module monitors oil status. I was questioning the fact that it uses "a sensor measures the resistance of the oil in the transfer case.More parts wear inside,more metal pieces in the oil,resistance decreases."
I've never heard of such sensor, for sure the ATC 700 in my 35d and the ATC 400 in my X3 don't have it and they simply monitored oil indirectly by tracking use and extrapolating the remaining useful life of the oil. Given the very limited gears in the transfer case the primary contaminant of oil comes from the wear of the clutch plates.
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I am quite mistaken in that case and I have no idea how that idea got into my head
I believe the oil quality in the VTG is monitored by the VTG control unit by terms of clutch pack slipping,but do not quote me on that.
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Originally Posted by ZetaTre
Quote:
Originally Posted by bawareca
All BMW fluids are "lifetime"  ,so must be something else. |
This is not true: most are, not all.
The TC oil is definitely not lifetime and albeit some SA claim otherwise, the owner's manual states the transmission fluid (at least for the ZF-6HP, don't know about the 8 speed) is 100K miles. The brakes have a fluid which is also not lifetime. |
There are some clues in this post that it is kind of irony.Regardless of the intended fluid life,you will not get this message on the dash,even for the engine oil change.
Quote:
Originally Posted by ZetaTre
Quote:
Originally Posted by bawareca
Tampering dot is gone with E39,E46 and E53.The system is a bit more complicated now,definitely not possible for amateurs to do a rollback.
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Also incorrect: the E70 has a manipulation dot that appears between the trip and the odometer (IIRC). It works the same way it has always done which is comparing the odometer recorded in the instrument cluster with the one store in the CAS. |
First of all,there is a huge misunderstanding how the tampering dot works on the older models.The mileage from the cluster is stored in the light module and the EWS.If you set the mileage to 0 in the LM or EWS it will take the value from the cluster first time the car accelerates to ~30 mph.If you lower the value in the cluster and the values in the LM and EWS are higher the tampering dot will illuminate.Same will happen if you change any of those modules and the VIN numbers dont match,regardless that the mileage may be accurate.
In the newer generation BMWs the mileage is stored in the cluster and CAS actively,+many other modules but only passive.If you lower the mileage in the cluster and install it on the car it will take the mileage from CAS,no tampering dot will appear.Vice versa is valid too.If you install a different cluster ,or different CAS and VINs do not match,the tampering dot may appear.But many other functions will not work and the car will be a mess.I have never seen the dot illuminate on any of the new models,and after deep google research this is the only thread I found that mentions the tampering dot:
http://www.xoutpost.com/bmw-sav-foru...-dot-came.html
But it is not very definitive after all.So yeah,the truth is out there
Sorry for the long post,at least we keep the forum alive and kicking.