DIY Solution to M54-M52TU CCV problems

[cn90]

I just ordered the BMW OEM CCV parts for a CCV overhaul at 115K, simply because the original system is still fine at 115K, so I will stick to the stock setup for now.

However, in the future, if I have to do this CCV again, I may switch to this mod.

For comparison purpose:
- My 1998 528i (M52 CCV setup) consumes nothing between oil changes.
- My 2006 X5 3.0i (M54 CCV setup) drinks about 1 qt every 1,000 miles.

Since the CCV setup is very similar between M52 and M54, I think the oil consumption issue in M54 has more to do with the pistons rings etc. rather than the CCV thingy.


One another note, bimmerforums E39 M54 forum has something similar to the mod in this thread. See the DIY by mcgnms below:

M54 Oil Consumption Solved

[JCL]

Originally Posted by cn90

Since the CCV setup is very similar between M52 and M54, I think the oil consumption issue in M54 has more to do with the pistons rings etc. rather than the CCV thingy.

At one time we had three BMW vehicles with the M54 engine. All were driven by the same drivers, on the same roads, in the same ambient temperatures. All were purchased new and broken in the same way. All used the same oil. The E53 consistently used more oil, over several years of concurrent comparison. The only difference was that it was a heavier vehicle. The engine was working harder. (Which incidentally meant that it warmed up faster). In terms of oil consumption, I don't think CCV design had anything to do with it.