Generation III Internal Engine 1997-2006 LS1 | LS6
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Pic of yellow crap under oil cap

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Old 10-01-2009, 11:13 PM
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yeah if you wanna sit there for 12 minutes idling go ahead

i just let mine run for 15 seconds, and drive and keep it under 2000 rpm till it warms up
Old 10-01-2009, 11:20 PM
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No worries..

I usually start mine and let it sit for around 45 seconds.. Just long enough for the oil to circulate.. If 45 seconds is going to make you late then it didn't matter anyways..
I take it easy the first minute or two driving then go WOT the rest of the way to my destination.
Old 10-02-2009, 12:15 AM
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Old 10-02-2009, 12:17 AM
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Just let it warm up a bit.
Old 10-02-2009, 12:18 AM
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Should be pretty straightforward
Old 10-02-2009, 07:01 AM
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try short tripping it for a month in -20 temps with a broken thermostat, that **** will get everywhere and be a pain to clean out.

If you've been doing this for a while now, I'd take the time to inspect the PCV lines. Replace PCV valve if contaminated. Possibly the stuff will be caked onto the valve covers as well. Should do an oil change too since if it can't really get rid of the moisture, this stuff makes the oil more acidic.
Old 10-02-2009, 07:48 AM
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Roger that. I'll be moving back down to Alabama in about a month. I'll probably start on all kinds of tearing down once I have a man cave.
Old 10-02-2009, 09:16 AM
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If you do alot of short trips it would be a good idea to change the oil on a time schedule instead of going by mileage. Changing every three months would be good practice even if the oil only has 1000 miles on it.
Old 10-02-2009, 10:59 AM
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Yep, normal...BUT:
1. Change the oil every 3 months.
2. Check PCV system, bet it needs TLC.
3. Add a catch can (RevXtreme).
4. Let it warm up for a minute or 3.
5. It will eventually shorten the life of your engine.

Head gasket issues happen, but aren't very common. The only cooling problems we routinely see on LS motors are water pumps shitting the bed and gunk in the radiator due to a poorly sealed system. Simply flush the coolant every 2 years.

You do all those things, and the yellow gunk will all but disappear.
Old 10-02-2009, 11:34 AM
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Yeah I definitely need to get a catch can. I've been following the longest thread in history, aka "my catch can routing ok?" and I think I've learned the value of a good catch can... but still dont own one, lol. I've been slowing down on the amount of abuse I dish out to my car mainly because its got 136k miles, its a 98 with its stock rod bolts, and its my DD. I'll let it warm up a bit more before I drive to work. I use to use it for long road trips all the time from AL to VA and back once a month.

I still see 6.0 in my future... with a decent catch can, and hopefully a little longer drive to work.
Old 10-02-2009, 02:13 PM
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I had that yellow stuff too. I disconnected/capped the PCV, installed breathers and it has never come back. Be sure to put a breather in the oil filler tube because as the moisture evaporates, it rises "up" and out that breather.
Old 12-01-2011, 10:28 PM
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Gazillion hp is what it is, i wonder switching to a catch can set up or the ls6 pvc would be worth switching to help this?
Old 12-01-2011, 11:44 PM
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old thread but.......before i switched to a ......LS6 valley cover.......i had it ALL the time......no more since the switch
Old 12-02-2011, 12:42 AM
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I have this same crap when the weather gets cold. Looks exactly like the picture the OP posted. I drive about 4 minutes to work and the car barely gets up to temperature by the time I pull into the parking lot.
Old 12-02-2011, 02:19 AM
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Originally Posted by lemons12
No worries..

I usually start mine and let it sit for around 45 seconds.. Just long enough for the oil to circulate.. If 45 seconds is going to make you late then it didn't matter anyways..
I take it easy the first minute or two driving then go WOT the rest of the way to my destination.
Hahaha! +1
Old 12-02-2011, 08:23 AM
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I ended up getting a catch can after I moved back to AL. My longer trips to work and the PCV upgrades seemed to cure it. The headgasket lives.
Old 12-02-2011, 08:56 AM
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Short trips to work suck anyways if you have a hot F body.
I take the "scenic" route to work when I have to use a car.
It adds about 10 minutes but, the engine thanks me for it.
It is at WOT temp just as I pull in to the parking lot.
If the weather is real nice, it's the Fatboy on the tarmac.
600 lbs being pulled by 165 hp twin cylinder stump puller...LOL
Love my WS6 but, nothin compares to 0 to 60 in about 2.5 seconds....and 35 mpg LOL
Old 02-12-2012, 10:08 AM
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I ordered a catch can to see if it helps on my pcv system.
Old 02-12-2012, 04:42 PM
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Originally Posted by sjsingle1
old thread but.......before i switched to a ......LS6 valley cover.......i had it ALL the time......no more since the switch
I'm just curious, how did the valley cover swap stop your issue?
Old 02-12-2012, 05:49 PM
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dont know how........but it did




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