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Oil catch can

Moledigger2019
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JimCost2014
JimCost2014

continue to throw around baseless words attempting to confuse everyone and paint the appearance that you know what your talking about.   Hmm, this is how I have held jobs for decades, hope n

customboss
customboss

Absolutely!   What people are thinking is oil condensate is fuels dilution. Use a better oil, tune your engine up.  Generally only  need for blow-by capture or catch cans are racing entities who have

txab
txab

I think we're done here.

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CamGTP Senior Enthusiast

CamGTP

Posted
Posted

But in that guys case he runs his engine for a long enough time to remove the water from the oil. If there was any build up of condensation over night, it would turn into steam and go away.

 

It's likely a safe bet to say that people who install a catch can and do check it/drain it on the regular, make more short trips or live in cooler climate that can build up more condensation inside the engine. That why you see milky cheese looking stuff come out of the catch can.

mookdoc6 Senior Enthusiast

mookdoc6

Posted
Posted
57 minutes ago, Jdkno said:

Not saying anything one way or the other, this is just my experience. My 17 had 86k on it when I traded it in for my 19 about 2 weeks ago. Never had a single engine issue and it was only at the dealer once about 2 months ago for an AC issue and fixing the chime volume. I changed the oil when the DIC was showing between 10-15%, and checked the dipstic every 2 weeks or so. The dipstic NEVER read below the full mark. Unless I was a rare exception I cant see how I had any oil left between changes listening to what people are supposedly getting out of the can on a weekly basis. If you do the math I'm putting alot more miles per week on my truck than most. 

I ain't sharp?  But that is many miles sir!

Jdkno Enthusiast

Jdkno

Posted
Posted
13 hours ago, CamGTP said:

But in that guys case he runs his engine for a long enough time to remove the water from the oil. If there was any build up of condensation over night, it would turn into steam and go away.

 

It's likely a safe bet to say that people who install a catch can and do check it/drain it on the regular, make more short trips or live in cooler climate that can build up more condensation inside the engine. That why you see milky cheese looking stuff come out of the catch can.

Not really. I have 2 long drives per day ~40 miles each to and from my office. My day starts with me making fairly short drives for the better part of the morning until I head to my office a little before lunch. 

  • 2 years later...
TxTruckMan Senior Enthusiast

TxTruckMan

Posted
Posted

Anybody got any pictures of the intake after 100k miles with a catch can and without? Same climate and conditions? I’ve never seen any. 

M1ck3y Senior Enthusiast

M1ck3y

Posted
Posted (edited)

T1's have 0 need of a catch can. Valve cover's filter out any oil (same as k2). But the T1's don't have a pcv valve coming from the valley. Which is largely responsible for any oil that creates carbon buildup. 

Edited by M1ck3y
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Z45 Senior Enthusiast

Z45

Posted
Posted
On 6/7/2019 at 9:57 PM, CamGTP said:

But in that guys case he runs his engine for a long enough time to remove the water from the oil. If there was any build up of condensation over night, it would turn into steam and go away.

 

It's likely a safe bet to say that people who install a catch can and do check it/drain it on the regular, make more short trips or live in cooler climate that can build up more condensation inside the engine. That why you see milky cheese looking stuff come out of the catch can.

Is the condensation actually from the engine.  My bet is the catch can is the source of 99% of it.  I have seen a lot where they are mounted where the can cool down quickly and they can lead to a lot of condensation forming the CC IMO.

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Truckboattruck Enthusiast

Truckboattruck

Posted
Posted

I have used catch cans on a few vehicles, found them to be useful but have no comparative proof. I will say that if you do install one stay away from Mishimoto, the one(s) I have used and seen are garbage.

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M1ck3y Senior Enthusiast

M1ck3y

Posted
Posted
19 hours ago, elcamino said:

Is the condensation actually from the engine.  My bet is the catch can is the source of 99% of it.  I have seen a lot where they are mounted where the can cool down quickly and they can lead to a lot of condensation forming the CC IMO.

 

Moisture builds up in everything including engine and transmission.

 

But like you said 😉 catch can's are largely responsible for that milky color some people see.

GETGONE Enthusiast

GETGONE

Posted
Posted
22 hours ago, M1ck3y said:

T1's have 0 need of a catch can. Valve cover's filter out any oil (same as k2). But the T1's don't have a pcv valve coming from the valley. Which is largely responsible for any oil that creates carbon buildup. 

You are 100% WRONG. I put a JLT catch can on my truck(6.2L) when I got home from the dealer with 30 miles on it. I changed the oil at 1000 miles because I like to do a short first oil change to get the break in junk out of it. I had at least 2 ounces of oil in the catch can. The direct injection motors are worse than traditional fuel injection motors because there is no fuel in the intake tract to help wash the oil back into the cylinder.

M1ck3y Senior Enthusiast

M1ck3y

Posted
Posted
1 minute ago, GETGONE said:

You are 100% WRONG. I put a JLT catch can on my truck(6.2L) when I got home from the dealer with 30 miles on it. I changed the oil at 1000 miles because I like to do a short first oil change to get the break in junk out of it. I had at least 2 ounces of oil in the catch can. The direct injection motors are worse than traditional fuel injection motors because there is no fuel in the intake tract to help wash the oil back into the cylinder.

 

Nope, I'm not wrong. 

 

I'm happy your happy though 😉

GETGONE Enthusiast

GETGONE

Posted
Posted
3 minutes ago, M1ck3y said:

 

Nope, I'm not wrong. 

 

I'm happy your happy though 😉

So all that oil just magically ended up in the catch can when you say no oil gets out of the PCV? You realize there is NO valve on the valve cover. It is a baffled hole.

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