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      05-17-2019, 06:50 PM   #23
climax_e92
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Quote:
Originally Posted by ssgm1x View Post
OCC is a must especially if you are doing a lot of short trips under 10 miles daily. Have a new 2018 M3 and my OCC pulls a lot of water into the catch can and a tad bit of oil. I do a lot of short drives. IMO OCC is a must. I have pics posted on a different thread
Aw crap i have 26k miles now and my daily commute is about 8 miles each way !
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      05-24-2019, 10:37 AM   #24
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Have any of you received any superfluous commentary from BMW service for having this can?

Given it's not CARB approved, what are the residual downsides of having this on a CA car?

Thank you.
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      05-24-2019, 10:57 AM   #25
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Quote:
Originally Posted by ssgm1x View Post
OCC is a must especially if you are doing a lot of short trips under 10 miles daily. Have a new 2018 M3 and my OCC pulls a lot of water into the catch can and a tad bit of oil. I do a lot of short drives. IMO OCC is a must. I have pics posted on a different thread
Yes, you almost have to be OCD with maintaining your OCC. Mine is en route along with other BMS goodies.
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      05-24-2019, 11:32 AM   #26
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Quote:
Originally Posted by THEROK View Post
Have any of you received any superfluous commentary from BMW service for having this can?

Given it's not CARB approved, what are the residual downsides of having this on a CA car?

Thank you.
They’ve never said anything to me about it.

The only downside is if you have excess fluid in the system and live in a cold climate, the fluid could freeze and cause a blockage which would lead to excess crankcase pressure.
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      08-09-2020, 04:12 PM   #27
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For those using the BMS catch can, any issues with it rubbing against the coolant hose over time (like audible vibrations, leaks, damaged hose)?
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