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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > Mechanical Maintenance and TSBs: Break-in / Oil & Fluids / Servicing / TSBs and Service Bulletin > Oil catch can, help me choose
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View Poll Results: Which OCC?
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      05-16-2019, 10:33 AM   #1
IraHayes
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Oil catch can, help me choose

OK, I read a lot of conflicting info as to whether or not these things work, but if it keeps my valves clean, and keeps oil from pooling up inside my intercooler, it's worth the small investment. Just don't know which one to get.

Mishimoto? I like the design, and it has good reviews, but on the pricey side.

BMS? Seems to be the standard.

ECS? Just noticed they have one too, which also seems to have a convenient dip stick, but I don't know its track record.

Anyone already have one of these brands? What's your experience?
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      05-17-2019, 07:00 AM   #2
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Many of us have BMS. I personally haven't had any problems and it seems to catch stuff just fine.
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      05-17-2019, 07:40 AM   #3
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I have this:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

It functions just fine. The only disadvantage is that to install it you have to cut the original PCV hose in the middle and splice in new sections of hose to connect to the can. If you're a skilled mechanic it's a simple job, if not you'll want a kit with plug and play hoses.
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      05-17-2019, 08:31 AM   #4
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Quote:
Originally Posted by Billfitz View Post
I have this:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

It functions just fine. The only disadvantage is that to install it you have to cut the original PCV hose in the middle and splice in new sections of hose to connect to the can. If you're a skilled mechanic it's a simple job, if not you'll want a kit with plug and play hoses.
I remember that kit, Bill. Did you finally get around to installing it, or are you still procrastinating lol? I think I want to get one with plug and play hoses, not because it would be difficult to set up myself, but because I live in CA. We have to take our cars in for "smog" checks every two years. Part of that test involves a visual inspection of the emissions related components, so I would need to put the car back to stock every two years. Plug and play would just make the task easier.
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      05-17-2019, 10:11 AM   #5
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I got mine installed two weeks ago, works fine. As for the emissions I doubt a catch can is a problem, since it has no effect on the operation of the PCV. I wrapped my hoses in foam insulation just like the original, so I doubt the average grease monkey would have the slightest idea that it's not OEM, being an invisible installation even though it's in plain sight. For that matter you can't even see the majority of the hoses unless you remove the air intake box.
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      05-17-2019, 02:17 PM   #6
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Quote:
Originally Posted by Billfitz View Post
I wrapped my hoses in foam insulation just like the original, so I doubt the average grease monkey would have the slightest idea that it's not OEM, being an invisible installation even though it's in plain sight. For that matter you can't even see the majority of the hoses unless you remove the air intake box.
That's a great idea on the foam insulation.
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      05-17-2019, 04:43 PM   #7
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The original pipe is wrapped with foam insulation. I don't know if it's supposed to keep the air in the pipe insulated from the heat of the engine compartment or the other way around, but I figured if BMW had a good reason to use it I would too.
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      05-17-2019, 05:15 PM   #8
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Quote:
Originally Posted by Billfitz View Post
The original pipe is wrapped with foam insulation. I don't know if it's supposed to keep the air in the pipe insulated from the heat of the engine compartment or the other way around, but I figured if BMW had a good reason to use it I would too.
May I ask where you got it from? I just went to my local auto parts store for some other items and they didnít have any.
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      05-17-2019, 09:27 PM   #9
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Lowes. It's used to insulate hot water pipes. Get the thinner wall variety.
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      05-18-2019, 09:06 PM   #10
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Just did mine today!
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      05-23-2019, 08:24 AM   #11
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Quote:
Originally Posted by Dylantm View Post
Just did mine today!
Nice install. I ended up going with the BMS and installed it last night. Took less than 30 minutes to do. Man alive was I shocked to see the amount of oil lining the inside of the vent pipe. Hope the can makes that a thing of the past.
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