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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > REPORT: Proof that BSH Oil Catch Can Does Not Work



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      04-09-2011, 04:39 PM   #1
vasillalov
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REPORT: Proof that BSH Oil Catch Can Does Not Work

Alright folks,

I've been patiently waiting for time to pass and my car to accumulate miles after I installed the BSH OCC last summer. So far I've had the OCC installed for almost 10 months and over 10,000 miles. This includes one winter season here in Chicago.

This is the first time I removed/uninstalled it to check on the condition and the amount of the collected oil.

So without further due:

This is ALL the oil that the BSH OCC managed to collect over the entire period described above:



As you can see from the picture, the oil that was collected was barely enough to cover the bottom of this small plastic cup. I'd say this is about 2-3 fl. oz of oil collected.

Here is a video showing that the BSH OCC does a really poor job at collecting oil fumes. I apologize for the sound quality. I took this video with my cell phone.



The verdict: This OCC does a really poor job at collecting oil fumes. It is poorly engineered because it sits right above the hot turbo manifolds. Any condensed oil vapors will simply get heated up and evaporate back into the intake. Also, the condensating element inside is nothing more than a perforated aluminum rectangle suspended only halfway inside the cylinder.
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      04-09-2011, 04:48 PM   #2
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I don't know if you realize this or not but everything you have posted proves nothing. All that you have proven so far is that your car has little blow by.

The real proof of it working or not is to show that if indeed it let oil get by and into the intake.

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      04-09-2011, 04:53 PM   #3
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Awww damn!! Anyone want to buy mine?
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      04-09-2011, 04:59 PM   #4
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The title of the thread is very misleading. If it didnt work there would be NO oil in it. You should have said "it doesnt work well." And you stick by your claim that is doesn't work at all, then why did I just empty a good bit out of mine? Awful post.
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      04-09-2011, 04:59 PM   #5
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Quote:
Originally Posted by bryans2k View Post
The real proof of it working or not is to show that if indeed it let oil get by and into the intake.

Bryan
You must be blind! The video clearly shows oil on BOTH the inlet and outlet pipes of the catch can being coated with oil. I also checked the 2 rubber hoses that come in and out of the OCC. BOTH had oil liquid coating the insides of them.

What more do you want for proof?
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      04-09-2011, 05:04 PM   #6
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Molecules in some kinds of liquids, like oil for example, are rather large and well tangled up and attached to each other. This means that evaporation, if it occurs at all, is very slow. That is why cooking oil, even though sometimes heated to a very high temperature, does not evaporate to an appreciable extent.
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      04-09-2011, 05:07 PM   #7
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Originally Posted by gbreeE90 View Post
The title of the thread is very misleading. If it didnt work there would be NO oil in it. You should have said "it doesnt work well." And you stick by your claim that is doesn't work at all, then why did I just empty a good bit out of mine? Awful post.
OK, if you are willing to go down this road then fine:

The whole purpose of the damn OCC is to capture ALL oil vapors. ALL! Not 50%, not 70% not 99%. ALL of it! This is the only way to make sure your intake valves will not get caked up with carbon deposits.

If the OCC fails to achieve 100% efficiency, then it DOES NOT WORK! Personally, if I am paying for a product with my hard earned cash, then those products need to work at 100%. Those BSH units are not cheap...

However, if you want to play the ostrich by thinking that "Well, it works... kinda..." then more power to you!
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      04-09-2011, 05:10 PM   #8
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Quote:
Originally Posted by vasillalov View Post
OK, if you are willing to go down this road then fine:

The whole purpose of the damn OCC is to capture ALL oil vapors. ALL! Not 50%, not 70% not 99%. ALL of it! This is the only way to make sure your intake valves will not get caked up with carbon deposits.

If the OCC fails to achieve 100% efficiency, then it DOES NOT WORK! Personally, if I am paying for a product with my hard earned cash, then those products need to work at 100%. Those BSH units are not cheap...

However, if you want to play the ostrich by thinking that "Well, it works... kinda..." then more power to you!
Okay, that's not my point. Show me where I said it was the best OCC, you cant, because I didnt. There are many better alternatives. I am simply saying your thread title is extremely misleading.
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      04-09-2011, 05:21 PM   #9
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Leave him alone. It obviously does not work because it is allowing oil to slip. That product was made with the purpose of filtering out 100%(ALL OF THE OIL) that comes to it, and even letting a bit slide(WHICH IS PROOVEN BY OIL ON BOTH INLETS) prevents it from doing its purpose.

Therefore, by deductive reasoning, I would say that something not doing its purpose is not working.

Game over.
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      04-09-2011, 05:22 PM   #10
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Quote:
Originally Posted by vasillalov View Post
OK, if you are willing to go down this road then fine:

The whole purpose of the damn OCC is to capture ALL oil vapors. ALL! Not 50%, not 70% not 99%. ALL of it! This is the only way to make sure your intake valves will not get caked up with carbon deposits.

If the OCC fails to achieve 100% efficiency, then it DOES NOT WORK! Personally, if I am paying for a product with my hard earned cash, then those products need to work at 100%. Those BSH units are not cheap...

However, if you want to play the ostrich by thinking that "Well, it works... kinda..." then more power to you!
I've never seen that occ but I'd like to see where it's manufacturer claimed it would capture 100% of blow by? There isn't a product that will do this and eventually you intake valves will get carbon deposits on them. It's meant to help slow that down not eliminate it. Maybe it's not as effective as it could be or maybe your engine doesn't have that much blowby but if your expecting 100% effectiveness you won't be happy with any solution as that's just a consequence of normal engine operation.
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      04-09-2011, 05:25 PM   #11
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Quote:
Originally Posted by Spitfirocks View Post
Leave him alone. It obviously does not work because it is allowing oil to slip. That product was made with the purpose of filtering out 100%(ALL OF THE OIL) that comes to it, and even letting a bit slide(WHICH IS PROOVEN BY OIL ON BOTH INLETS) prevents it from doing its purpose.

Therefore, by deductive reasoning, I would say that something not doing its purpose is not working.

Game over.
Not working would be catching no oil. Gamer over? Really?
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      04-09-2011, 05:55 PM   #12
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Quote:
Originally Posted by vasillalov View Post
The whole purpose of the damn OCC is to capture ALL oil vapors. ALL! Not 50%, not 70% not 99%. ALL of it! This is the only way to make sure your intake valves will not get caked up with carbon deposits.

If the OCC fails to achieve 100% efficiency, then it DOES NOT WORK! Personally, if I am paying for a product with my hard earned cash, then those products need to work at 100%. Those BSH units are not cheap...
Unfortunately, the only way to stop crankcase vapors from reaching the intake is to eliminate your PCV system altogether. No oil catch can will stop everything, however, a single perforated aluminum plate sounds a bit ineffective. There are plenty of DIY OCC designs in various forums around the internet. Most use either steel wool or multiple layers of steel mesh (like from a screen door) to provide better oil condensation, but a balance must be struck between OCC effectiveness and PCV flow.
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      04-09-2011, 06:26 PM   #13
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Damn either you hardly drive WOT or the BSH can is not designed properly because I have the Riss Racing can and only over the course of 3000 miles I collected much more than your pics...RR has steel wool filled to the top and bottom of the can...Here is a pick of my oil catch after 3000 miles
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      04-09-2011, 07:18 PM   #14
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Cool story, as usual you prove nothing even showing you catched oil so whats the point? Be glad your engine has little blowby...
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      04-09-2011, 07:33 PM   #15
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enrita: how is the AR OCC working for you?
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      04-09-2011, 07:39 PM   #16
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enrita: how is the AR OCC working for you?
I might have right now 3mm of oil it but considering all the downtime dont know what to think about it.
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      04-09-2011, 08:46 PM   #17
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I know what you are saying valisolv because the CC that I made collects a lot more oil than that and also, the output of my CC does not have oil coated on it.

I would say that it works because it does catch oil, but I would say that it works very poorly.
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      04-09-2011, 09:17 PM   #18
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Quote:
Originally Posted by vasillalov View Post
OK, if you are willing to go down this road then fine:

The whole purpose of the damn OCC is to capture ALL oil vapors. ALL! Not 50%, not 70% not 99%. ALL of it! This is the only way to make sure your intake valves will not get caked up with carbon deposits.

If the OCC fails to achieve 100% efficiency, then it DOES NOT WORK! Personally, if I am paying for a product with my hard earned cash, then those products need to work at 100%. Those BSH units are not cheap...

However, if you want to play the ostrich by thinking that "Well, it works... kinda..." then more power to you!
Interesting that you paid big bux for a car that has a fuel pump that does not run 100 % ALL of the time sorry just had to say that. The intake vvalve problem has as much to do with egr fumes as it does with pcv vents.
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      04-09-2011, 09:41 PM   #19
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Hey Vas, I suspected this and now you're going to force me to check mine. A proper OCC should NOT have oil in the outlet. We really need some type of changable filter in my opinion. Aluminum plate with holes is doing nothing.

FYI: the OCC does nothing for the valves... only intake piping, fmic, etc.
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      04-09-2011, 09:49 PM   #20
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Yeah I still have the fucking oil in the piping after the install of this thing, pointless really !
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      04-09-2011, 10:04 PM   #21
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Im thinking about stuffing mine with steel wool

bad idea?
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      04-09-2011, 10:10 PM   #22
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Quote:
Originally Posted by Mr. 5 View Post
I know what you are saying valisolv because the CC that I made collects a lot more oil than that and also, the output of my CC does not have oil coated on it.

I would say that it works because it does catch oil, but I would say that it works very poorly.
Bingo! That's what I am talking about! That's the whole purpose of the OCC: to catch and stop all oil vapors from entering the intake.
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