What did you do to your NNBS GMT900 Tahoe/Yukon Today?

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Hi-psi

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2500 miles since installing. Catch can is doing a great job of making coffee/chocolate milk. :waytogo:

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kbuskill

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2500 miles since installing. Catch can is doing a great job of making coffee/chocolate milk. :waytogo:

53429784_1209981492500899_4987216312154456064_n.jpg

Just curious... I notice alot of you guys get the milky looking oil out of your catch cans... do you guys do a lot of short trips around town???

The reason I ask is mine never looks like that but I live kinda out in the sticks so trips are probably longer.

I know the milky oil is caused from moisture/condensation in the crankcase from heating and cooling and it's nothing major like a bad head gasket or anything but I was just curious.

I also make it a habit to remote start my truck and allow it to get up to operating temperature before driving it as well... perhaps that helps too.

Mine is always normal looking...
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PG01

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Just curious... I notice alot of you guys get the milky looking oil out of your catch cans... do you guys do a lot of short trips around town???

The reason I ask is mine never looks like that but I live kinda out in the sticks so trips are probably longer.

I know the milky oil is caused from moisture/condensation in the crankcase from heating and cooling and it's nothing major like a bad head gasket or anything but I was just curious.

I also make it a habit to remote start my truck and allow it to get up to operating temperature before driving it as well... perhaps that helps too.

Mine is always normal looking...
View attachment 218164
Mmmm dunkin black coffee....
 

Doubeleive

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Just curious... I notice alot of you guys get the milky looking oil out of your catch cans... do you guys do a lot of short trips around town???

The reason I ask is mine never looks like that but I live kinda out in the sticks so trips are probably longer.

I know the milky oil is caused from moisture/condensation in the crankcase from heating and cooling and it's nothing major like a bad head gasket or anything but I was just curious.

I also make it a habit to remote start my truck and allow it to get up to operating temperature before driving it as well... perhaps that helps too.

Mine is always normal looking...
View attachment 218164
I was kind of wondering the same thing I would be a bit worried if something like that was showing up, I haven't put a catch can in (yet) thought about it but if mine is using any oil it has to be pretty minuscule oil level stays the same between oil changes L94
 

kbuskill

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My new 3 chamber Magnaflow arrived today...

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Came with tool box art...
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A pic down the throat...
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I'm also thinking about going old school and sticking an old stainless tip on her straight out the back instead of out the side corner... just to be different...
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It's a 4" stainless tip that I had on my old 2 door box body S-10 Blazer.
 

Hi-psi

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Just curious... I notice alot of you guys get the milky looking oil out of your catch cans... do you guys do a lot of short trips around town???

The reason I ask is mine never looks like that but I live kinda out in the sticks so trips are probably longer.

I know the milky oil is caused from moisture/condensation in the crankcase from heating and cooling and it's nothing major like a bad head gasket or anything but I was just curious.

I also make it a habit to remote start my truck and allow it to get up to operating temperature before driving it as well... perhaps that helps too.

Mine is always normal looking...

I'd say my driving is a mix, swaying more towards highway. The 2500 miles since putting the catch can on is compiled of mostly Mon-Fri work commute, 50-60 miles round trip, 95% interstate, and this past weekend about an 800-900 mile round trip road trip.

Do you drain yours hot or cold? Something I've noticed on past vehicles and now this time is if I drained the catch can within 30 or so mins of shutting the engine off, the result was always milky. But after the drainage sat for a while in the bottle and cooled it would get measurable darker. And then if I didn't drain it hot, but waited to drain until the engine was cool, what came out of the can was darker.

Either way, no matter what color stuff comes out, it isn't making it's way into the engine so that's a plus.


Side topic... Currently my catch can install, like most of the ones on here I've seen, the input is off the rear of the driver's valve cover, then outputs to the port on the top/center of the intake manifold. Recently when I did my DIY PVC intake tube, going into it is a hose/line which comes off the passenger side valve cover. Has anyone integrated that into their catch can as well? Unless I'm missing something, it seems you'd want to.
 

Chrismnj

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Just curious... I notice alot of you guys get the milky looking oil out of your catch cans... do you guys do a lot of short trips around town???

The reason I ask is mine never looks like that but I live kinda out in the sticks so trips are probably longer.

I know the milky oil is caused from moisture/condensation in the crankcase from heating and cooling and it's nothing major like a bad head gasket or anything but I was just curious.

I also make it a habit to remote start my truck and allow it to get up to operating temperature before driving it as well... perhaps that helps too.

Mine is always normal looking...
View attachment 218164

looks clean, ready to pour it back in the engine. lol
 
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