That was my point, on my car the "damage" is done. So does this really make sense at 36,000mi?

+Ar0c,nkc, and myself.
1.)avery.whss
2.)bjonesmd
3.)kfriedenberger
4.) Maroonc63
5.)Tex5
6.)507AMG
7.)Mort
8.) Andy0331
9.) sinape62
10.) chchart
11.) shades
12.) kgmuse
13.) -Lightning-
14.) 8o8is
15.) zibby43
16.) OlegKouz
17.) Ar0c
18.) nkc
19.) SCAMG13
__________________

1.)avery.whss
2.)bjonesmd
3.)kfriedenberger
4.) Maroonc63
5.)Tex5
6.)507AMG
7.)Mort
8.) Andy0331
9.) sinape62
10.) chchart
11.) shades
12.) kgmuse
13.) -Lightning-
14.) 8o8is
15.) zibby43
16.) OlegKouz
17.) Ar0c
18.) nkc
19.) SCAMG13
20.) CPD SLK

Another one for me
21.) Tex5

I was just about to place myself back on the list until I read your question. This is a good question. Can we get an answer to this? I assume the catch can will prohibit additional oil from entering, but any oil currently in there will remain there until it is physically removed.

+1

The intake has to be taken off, like in the pics weistec posted. You will keep further oil from getting in though.

I would agree that you would want to get this as early as possible in the engines life, however there are likely two points that make adding it a good idea at any time.

First, as Weistec states, the aeresolized oil is a low octane addition to the intake gases and effectively reduces the octane rating of the intake charge. The engine's knock sensors would, I presume, retard timing and reduce power to prevent pre-detonation.

Secondly, even though there may be accumulated oil in the intake tract, that does not mean adding more can't do any further harm in the way of valve and piston deposits.

For me the real question is not "do I add this to my engine?"
It is "Why is an equivalent component not already there?"

I don't believe it is because MB doesn't care about the longevity of their engines. I suspect it is because the cost/benefit ratio of this additional component is marginal when applied to millions of units. That is, if they get 1 more year of life before a rebuild, on an engine that is designed to run say 12 years on average before requiring a rebuild (just a guess on my part), there is no significant benefit to MB as a motor company to add this component and extend the life of the engine for year or two. It is not the type of component that will prevent a catastrophic failure e.g. head bolts. It only keeps the engine cleaner over time and likely marginally improves power and emissions.

I will get one because I am compulsive about my automotive care and keeping my engine as clean as is reasonably possible sounds very good to me. Plus it's CNC gear head coolness.

To add to that, you could always get an engine clean which in turn will clean your valves of deposits. We have a machine that will clean your valves, combustion chamber, o2 sensors etc... I usually do this to my engine every six months for just this reason. Having the catch can will further help my engine as bjonesmd has mentioned. It's good piece of mind for me

I see where you are comng from with your question but this is slightly skewed logic. If you have a crack in a dam and some water gets through do you just throw your hands up and say the hell with it or do you repair the damn before it gets worse? A high milage engine that has had a lifetime of oil crankcase blowby might benefit from this mod even moreso than a low mile car, ever heard the term "straw that broke the camels back"? It's possibly even more important for you to get the problem under control now and prolong the life of your engine...better late than never. Every M156 engine will benefit from this catch can no matter if it has 100 miles on it or 100,000 miles on it. On my CLK BS I was buring over a quart of oil every 1000 miles or so, that oil was venting into my airbox, some of it sat in my airboxes but some of it worked it's way through my MAF's and into my engine. After installing the catch can I was amazed at how much oil was being "caught". Weistec should just post a video of how much oil works it's way into a catch can after just 500-1000 miles and I guarantee they would sell out in 24hrs. It's never too early or late to add this catch can mod. AMG should have had a better fix for this from the factory. I have regular conversations with a few people from AMG and even they acknowledge(off the record) that they engine blowby on the M156 is an pretty big issue and they were happy to see this Weistec aftermarket solution.

...as for the $400 price, that is an absolute steal! I get "special' pricing from Weistec and that is lower than I paid for the catch can when they first introduced it a couple years ago so you would be a fool not to jump at this opportunity.

1.)avery.whss
2.)bjonesmd
3.)kfriedenberger
4.) Maroonc63
5.)Tex5
6.)507AMG
7.)Mort
8.) Andy0331
9.) sinape62
10.) chchart
11.) shades
12.) kgmuse
13.) -Lightning-
14.) 8o8is
15.) zibby43
16.) OlegKouz
17.) Ar0c
18.) nkc
19.) SCAMG13
20.) CPD SLK
Another one for me
21.) Tex5
22.) m a x i m u s

1.)avery.whss
2.)bjonesmd
3.)kfriedenberger
4.) Maroonc63
5.)Tex5
6.)507AMG
7.)Mort
8.) Andy0331
9.) sinape62
10.) chchart
11.) shades
12.) kgmuse
13.) -Lightning-
14.) 8o8is
15.) zibby43
16.) OlegKouz
17.) Ar0c
18.) nkc
19.) SCAMG13
20.) CPD SLK
21.) Tex5
22.) m a x i m u s
23.) Rate

1.)avery.whss
2.)bjonesmd
3.)kfriedenberger
4.) Maroonc63
5.)Tex5
6.)507AMG
7.)Mort
8.) Andy0331
9.) sinape62
10.) chchart
11.) shades
12.) kgmuse
13.) -Lightning-
14.) 8o8is
15.) zibby43
16.) OlegKouz
17.) Ar0c
18.) nkc
19.) SCAMG13
20.) CPD SLK
21.) Tex5
22.) m a x i m u s
23.) Rate
24.) the_indian_kid

1.)avery.whss
2.)bjonesmd
3.)kfriedenberger
4.) Maroonc63
5.)Tex5
6.)507AMG
7.)Mort
8.) Andy0331
9.) sinape62
10.) chchart
11.) shades
12.) kgmuse
13.) -Lightning-
14.) 8o8is
15.) zibby43
16.) OlegKouz
17.) Ar0c
18.) nkc
19.) SCAMG13
20.) CPD SLK
21.) Tex5
22.) m a x i m u s
23.) Rate
24.) the_indian_kid
25.) johnnyblaze

I would like to get in on this aswell! Count me in!

Shipping price to Sydney, Australia?

That's 25! Let us Pay. Also, since this good size group is predominately W204 chassis both coupe and sedan will a prefab mounting bracket come with this unit?

The clean air will eventually flush it all out over time.

I assume this is a fairly straight forward DIY.
Wesitec any install instructions that you can post up?
Im in as well!

Although the question seems to be answered, we will hit it one more time.

The M156/M159 engine is prone to getting oil in the intake system due to the design of the PCV system. Crankcase ventilation routing from the engine block to the intake manifold is in close proximity to the front timing chain, and this causes oil to be sucked up into the intake manifold. Although AMG took a very different (and very nice) approach to venting the crankcase, these engines do suck up quite a bit of oil, causing the intake manifold, runners, valves, etc. to be coated with oil.

From our testing, and years of examining these engines, the oil does eventually burn away and dry off if no new oil has entered the system. To answer the question, "Is the damage already done", the answer is no. Run the separator and over time you will see that 90% of the oil is not in the intake manifold.

We hope this helps. Thanks!

Weistec Engineering

Here is a short video a customer put up on YouTube. This is a great representation of how much oil the separator will not allow to go back into the engine.

One more...

Installation manual link below. Thank you all!

http://weistec.com/install/m156oas.pdf

Weistec Engineering

how do we proceed to buy one? still showing up on ur site as sold out

Can more than 25 participate? I'd like to get one also.

Thanks,
Glenn

We will allow the group by to run until Friday the 13th!

Weistec Engineering