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  #91  
Old 11-18-2014, 12:45 PM
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catch can during the winter months is almost always gonna have "mayo" in it
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  #92  
Old 11-18-2014, 08:23 PM
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I`ll just have to keep an eye on it and empty it regularly then. I guess its better to go into the catch can than back into the engine though.which would be how the original would work. at least now when I check my oil I have no mayo on the oil dipstick like I did before.
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  #93  
Old 01-09-2015, 06:13 PM
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well emptied catch can about 1/4 full, 90% water 10% mayo, and no mayo on the oil fill cap or dipstick tube . and right now we are seeing -40c weather and the x5 is running strong. and also I never had to add oil either.
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  #94  
Old 01-09-2015, 07:27 PM
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Thanks for the update! Even though I'm no longer driving an X5, the oil usage and cheese problem isn't limited to the M54B30. M54B25 in my e46 325i is showing cheese on the oil cap and uses (what I think is) way too much oil. I've been thinking of replacing the CCV on it, but may just do this mod instead. It's got to be less costly, and that's always a good thing.
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  #95  
Old 01-09-2015, 07:35 PM
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I lost all of my confidence in the bmw ccv with this engine,so I will never go back to it.I definately don`t like how the ccv system is hooked into the lower part of the dipstick tube. almost a year ago is when I had a hydrolocked engine because of the ccv failure ,sucking oil from the crankcase through the lower dipstick tube hose.
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  #96  
Old 01-31-2015, 08:32 PM
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emptied catch at 209500km today and again only 1/4 full hardley any mayo and mostley water.
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  #97  
Old 02-19-2015, 10:58 PM
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This is one of the things on my to-do list. Also going to do NBT retrofit, get the updated shifter, as well as general maintenance. FYI this winter I swapped M1 0W-40 (this is before I got the notice of the new product releases, one of which being OW-40 >.<) and I cant really say anything regarding CCVs (haven't really had any issues, knock on wood) but performance wise I would say for cold weather the 0W-40 might help some. Again not sure if it'll do anything with CCV issues but who knows.
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  #98  
Old 02-19-2015, 11:05 PM
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5w 40 working well for me .
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  #99  
Old 02-21-2015, 12:39 PM
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So, I've been getting used to the X5, and it's been absurdly cold (for here, at least) - hovering in the -10 to 10F range for the last week.

On purchase, I noted a little mayo under the oil filler cap. After I did an oil change, it reappeared after about an hour's dive, so I started to worry about the CCV.

After reading this thread and weighing the knowns and unknowns, I went ahead and jumped in head first.

I picked up this air/oil separator: http://www.summitracing.com/parts/mor-85499

It's spec'd for an s52 (which, given that I've had my 96 m3 for 13 years now, I'm familiar with). Therefore, I thought it would work well in this application. In the m3 application, it's designed to work in-line with the CCV system (which I have never had a problem with on the m3). However, like the video and posts in this thread, I decided to just bypass the CCV, insert a PCV inline on the intake side, and use the air/oil separator catch can by itself. The hoses and inlets to the can are all stock diameter, near as I can tell. I re-used the stock connectors off the stock pipes (both the intake and head vent pipes cracked as I pulled the connectors off...more indication this needed to be done, although both were insulated, so I'm guessing this car did have the cold weather kit on it, at least those parts of it).

Install was fairly straightforward - maybe a little too simple, as others have noted. A good amount of water came out of the air distributor when I pulled it off - so it was probably a good thing to address.

However, I do notice that the hose supplied with the kit is collapsing a little. I don't think it's a complete collapse, but it is visible This may explain, hopefully, why I have an abundance of vacuum. As in, turn the engine off, wait a minute, and when the dipstick is pulled there's an audible change of pressure.

Until I get a chance to reinforce these hoses (or pick up heavier duty hoses), will this (apparent) excess vacuum hurt the engine? It's not throwing any codes, and the idle seems to be just fine.

I'll throw some pictures up of the setup eventually - I need to trim the hoses to fit (I have bit of extra length at the moment), but I might just wait until I can source a better hose to use.
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  #100  
Old 02-21-2015, 12:55 PM
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thats a nice catch can I like the the drain valve on it. looks nice and clean and not so tall either.plus nice clamp for installing it too.
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