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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Fri, Sep-08-2017, 01:37:05 PM   #1
SliM3
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Default E85 and Catch Can Recovery

Hey guys need a little assistance identifying the liquid I drained from my catch can.

I'm running E85, with AFR's averaging 13. During cold starts at 65-degrees and below, I'll hit about 10 on start-up and it'll bump up to around 11-11.5 for warm-up & settle in at idle around 14-14.7.

I know E85 is hygroscopic and I expected more steam from the tail pipe, but after about two days of driving I dumped this from my catch can:






Would this be considered normal quantity, and, why does it look like a urine sample?

Also, should I send it to Blackstone for analysis, or don't waste my time?
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Old Fri, Sep-08-2017, 01:44:25 PM   #2
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Default Re: E85 and Catch Can Recovery

It's pretty normal for catch cans to get a decent amount of water in them - simple condensation from the air, not necessarily anything that has to do with your fuel. I wouldn't worry about it too much as long as it still smells a bit like petroleum byproducts
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Old Fri, Sep-08-2017, 02:47:48 PM   #3
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Default Re: E85 and Catch Can Recovery

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Originally Posted by Drewster View Post
It's pretty normal for catch cans to get a decent amount of water in them - simple condensation from the air, not necessarily anything that has to do with your fuel. I wouldn't worry about it too much as long as it still smells a bit like petroleum byproducts


Cool thanks. Yeah it definitely smells like petro byproduct.


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Old Fri, Sep-08-2017, 03:01:16 PM   #4
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Default Re: E85 and Catch Can Recovery

Mine looked exactly the same
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Old Fri, Sep-08-2017, 03:17:06 PM   #5
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Default Re: E85 and Catch Can Recovery

Hey Brian, I think that's relatively normal for some, but mine has the more typical espresso latte look to it...I have the old HPF set up and I've noticed that mine fills almost completely up after just a few hundred miles of driving. Amazing how much crap these "catch" cans actually trap inside!
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Old Fri, Sep-08-2017, 03:58:52 PM   #6
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Default Re: E85 and Catch Can Recovery

Weird. I must've had a crappy catch can,coz for 6months it stayed mainly empty, apart from a few droplets of oil
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Old Fri, Sep-08-2017, 08:30:16 PM   #7
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Default Re: E85 and Catch Can Recovery

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Weird. I must've had a crappy catch can,coz for 6months it stayed mainly empty, apart from a few droplets of oil
Maybe you're not driving it hard enough!?
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Old Fri, Sep-08-2017, 09:57:02 PM   #8
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Default Re: E85 and Catch Can Recovery

Quote:
Originally Posted by stash1 View Post
Hey Brian, I think that's relatively normal for some, but mine has the more typical espresso latte look to it...I have the old HPF set up and I've noticed that mine fills almost completely up after just a few hundred miles of driving. Amazing how much crap these "catch" cans actually trap inside!
I'm used to seeing milky brown stuff that smells like fuel.
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Old Fri, Sep-08-2017, 11:34:52 PM   #9
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Default Re: E85 and Catch Can Recovery

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Originally Posted by bigjae1976 View Post
I'm used to seeing milky brown stuff that smells like fuel.
That's what I see in my catch can running 93 pump gas
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Old Fri, Sep-08-2017, 11:35:47 PM   #10
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Default Re: E85 and Catch Can Recovery

Are there a lot of people using catch cans on NA engines?


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Discussing E85 and Catch Can Recovery in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)