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    Author Topic: Sooty Oil?  (Read 653 times)

    Offline EMCD

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    Sooty Oil?
    « on: May 16, 2014 - 12:03:11 PM »
    When i checked my oil this morning it had what looks like soot in the oil.  small black stuff, not a lot, but a little. i felt it and it didn't feel gritty and the oil had no effervescence. so, i'm woundering if i'm good, or problems are heading my way. the motor is a 408 stroker with maybe 3k miles since full rebuild. motor runs and sounds great.
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    Offline dpcd67

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    Re: Sooty Oil?
    « Reply #1 on: May 16, 2014 - 12:25:43 PM »
    Soot comes from combustion of burned gas or oil, so it is bypassing either the rings, or valve guides. A certain amount will get past normally; how much is too much? I don't know; As long as my engines run like I want them to, I don't worry about it.
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    1963 Dodge M37 (3)
    1967 Dodge WM300 (2)
    1971 Plymouth Duster
    Bought new in '71; I wanted the Challenger but they were $2850; too much $ so I got the 318, 3 speed on the floor, Twister Duster for $2100.
    1973 Plymouth Barracuda
    I ain't done yet.

    Offline EMCD

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    Re: Sooty Oil?
    « Reply #2 on: May 16, 2014 - 12:36:40 PM »
    It was the first time I've seen it, so it freaked me out a bit. It runs good, so I think I'm ok.
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    Offline dpcd67

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    Re: Sooty Oil?
    « Reply #3 on: May 16, 2014 - 12:47:51 PM »
    Could be iron too, from your rings seating.  Change your oil and see.
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    1963 Dodge M37 (3)
    1967 Dodge WM300 (2)
    1971 Plymouth Duster
    Bought new in '71; I wanted the Challenger but they were $2850; too much $ so I got the 318, 3 speed on the floor, Twister Duster for $2100.
    1973 Plymouth Barracuda
    I ain't done yet.

    Offline EMCD

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    Re: Sooty Oil?
    « Reply #4 on: May 16, 2014 - 12:49:21 PM »
    Would they still be seating at 1500-2000 miles?
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    Offline Oldschool

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    Re: Sooty Oil?
    « Reply #5 on: May 16, 2014 - 12:52:30 PM »
    Quote from: EMCD on May 16, 2014 - 12:49:21 PM
    Would they still be seating at 1500-2000 miles?


    Sometimes, it takes more miles than that for chrome moly rings to seat. I would change the oil and filter and drive it a few hundred miles and re check it.   :2thumbs:   
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    Ken  --  In Georgia

    MOPAR-------"Built To Run------Here To Stay"

    Offline EMCD

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    Re: Sooty Oil?
    « Reply #6 on: May 16, 2014 - 12:59:38 PM »
    Cool. Will do
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    Offline cudabob496

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    Re: Sooty Oil?
    « Reply #7 on: May 16, 2014 - 06:15:54 PM »
    Did you do an oil change within the first few hundred miles of the engine rebuild?
    That was recommended for my rebuild.
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    72 Cuda, owned 25 years. 496, with ported Stage VI heads, .625 in solid roller, 254/258 at .050, 3500 stall, 3.91 rear. 850 Holley DP, Reverse manual valve body.

    1999 Trans Am, LS1, heads, cam, headers, stall, etc! Love to surprise the rice rockets with this one. They seem so confident, then it's "what the heck just happened?"

    2011 Kawasaki Z1000

    Offline EMCD

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    Re: Sooty Oil?
    « Reply #8 on: May 16, 2014 - 06:38:32 PM »
    Yes, this my 3rd oil change since the rebuild. There was just a little bit of soot. Nothing crazy, but I did notice it.
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    Offline cudabob496

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    Re: Sooty Oil?
    « Reply #9 on: May 16, 2014 - 06:58:03 PM »
    Quote from: EMCD on May 16, 2014 - 06:38:32 PM
    Yes, this my 3rd oil change since the rebuild. There was just a little bit of soot. Nothing crazy, but I did notice it.


    Might be worth cutting open the oil filter element and inspecting for abnormalities.

    http://www.cuda-challenger.com/cc/index.php?topic=98796.msg972210#msg972210

    « Last Edit: May 16, 2014 - 07:09:52 PM by cudabob496 »
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    72 Cuda, owned 25 years. 496, with ported Stage VI heads, .625 in solid roller, 254/258 at .050, 3500 stall, 3.91 rear. 850 Holley DP, Reverse manual valve body.

    1999 Trans Am, LS1, heads, cam, headers, stall, etc! Love to surprise the rice rockets with this one. They seem so confident, then it's "what the heck just happened?"

    2011 Kawasaki Z1000

    Offline jhaag

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    Re: Sooty Oil?
    « Reply #10 on: May 16, 2014 - 09:04:40 PM »
    I would be confident you have nothing to worry about. I will add this though for others reading this post. It is always a good idea to let your engine get to operating temps any time it is started. These cars sit a lot and starting any engine and shutting it off before it reaches operating temps is hard on the internals and the oil. If you park it for long periods you are better off not starting it if it will only run a short time. You get condensation and fuel and other contaminates in the oil. Letting them get warm and better yet putting them under a load helps get rid of some of this nastiness.  :2cents:
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    love 70 Challengers

    Offline cudabob496

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    Re: Sooty Oil?
    « Reply #11 on: May 16, 2014 - 09:17:39 PM »
    More soot may occur in oil, if during break in, you are running too rich, and not getting complete burn
    in your combustion chamber.

    Also, make sure PCV system working well.
    « Last Edit: May 16, 2014 - 09:20:59 PM by cudabob496 »
    Logged
    72 Cuda, owned 25 years. 496, with ported Stage VI heads, .625 in solid roller, 254/258 at .050, 3500 stall, 3.91 rear. 850 Holley DP, Reverse manual valve body.

    1999 Trans Am, LS1, heads, cam, headers, stall, etc! Love to surprise the rice rockets with this one. They seem so confident, then it's "what the heck just happened?"

    2011 Kawasaki Z1000
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