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Another "Oil Help" thread

This is a discussion on Another "Oil Help" thread within the General Help forums, part of the LSx Technical Help Section category; I've got a 99 ws6 with 130k miles. Guy I bought it from said it was rebuilt but I really ...

  1. #1
    Member natews6's Avatar
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    1999 WS6(sold) 2003 Cobra

    Another "Oil Help" thread

    I've got a 99 ws6 with 130k miles. Guy I bought it from said it was rebuilt but I really don't think it has been cause there is a bad intake valve in cylinder 7. I was wondering what oil you would recommend? I don't think I should use any oil that has a bunch of cleaning additives because then it would clean the junk up that the engine has sealed itself with, so i"ve been using Mobil 1 Clean 5000. The car had Rotella 15w40 in it beforehand. I live in Southern Missouri so the weather really isn't too harsh. Summer is full of 85-95 degree days and the temps now are around 60 in the morning and 80+ in the afternoon. Thank you for the help!

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    Life in the Fast lane sunsetorangess's Avatar
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    There are a ton of stickys floating around about which weight of oil to use personaly i just use 5W-30. Brand is your choice.
    If the previous owner "rebuilt" the engine they might not have touched the heads. Some people just do have butted work.
    Why did he rebuild? do you know
    J
    2001 SS, Its not the car its the Driver that matters....

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    Member natews6's Avatar
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    1999 WS6(sold) 2003 Cobra

    I'm assuming he did the rebuild while he installed the ls6 head/cam...if it was even rebuilt. The guy I bought it from didn't actually rebuild the engine, it was the guy he bought it from. I've tried looking for the casting numbers on the heads but I absolutely cannot find them.

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    Member zmg00camaross's Avatar
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    I would run a 10w30 and casting number on the head is easy there should be a number on the passenger side head right in front below the valve cover. if it has ls6 heads 243 stock would 853 i think.

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    Member natews6's Avatar
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    1999 WS6(sold) 2003 Cobra

    Quote Originally Posted by zmg00camaross View Post
    I would run a 10w30 and casting number on the head is easy there should be a number on the passenger side head right in front below the valve cover. if it has ls6 heads 243 stock would 853 i think.
    Alright thanks bro. Why the 10w-30? And where at in Missouri are you located? I'm in the bootheel.

  6. #6
    Member zmg00camaross's Avatar
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    Quote Originally Posted by natews6 View Post
    Alright thanks bro. Why the 10w-30? And where at in Missouri are you located? I'm in the bootheel.
    i Run 10w30 doesnt sear as easily. you can run a 5w30 no problem. Myself i run a 0w30 amsoil. Myself i live in Hermann Mo. hour away from St. Louis Right in the middle of MO. Did you find the casting numbers yet.

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    Member natews6's Avatar
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    1999 WS6(sold) 2003 Cobra

    Quote Originally Posted by zmg00camaross View Post
    i Run 10w30 doesnt sear as easily. you can run a 5w30 no problem. Myself i run a 0w30 amsoil. Myself i live in Hermann Mo. hour away from St. Louis Right in the middle of MO. Did you find the casting numbers yet.
    Nope, I looked again and absolutely can't find the numbers. Are they one the front of the head by the intake or below the coils?

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    Member c5z28's Avatar
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    10w is the viscosity when cold. Oil is used for lubrication all that additive stuff just takes place of what should be lubricating your internals. Sarge has mentioned stuff you use every oil change but you should look it up and decide for yourself. Mobil isn't what it used to be penzoil platinum and amsoil are supposed to be great. Amsoil is a sponsor here I am sure he gives you a deal if you buy straight from him.

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    Member zmg00camaross's Avatar
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    Moderator Cutlass's Avatar
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    Quote Originally Posted by c5z28 View Post
    Amsoil is a sponsor here I am sure he gives you a deal if you buy straight from him.
    Used to be...Looks like they didn't renew their sponsorship

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    Senior Member JayTA98's Avatar
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    So Mobil 1 is no good?

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    Moderator Cutlass's Avatar
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    mobil one is a good oil. Not as good as it used to be, but still a good oil.

  13. #13
    Member natews6's Avatar
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    1999 WS6(sold) 2003 Cobra

    Quote Originally Posted by zmg00camaross View Post
    Click for full size
    My heads are black and where the casting number should be the paint is chipped... I even got a flashlight and mirror out to look at the back of the heads underneath the dash and there wasn't anything on that side either. There is a black, little oblong looking cirlce sitting there but there isn't any numbers on it tho..

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    Member zmg00camaross's Avatar
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    well hell. IDK haha good luck

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    Quote Originally Posted by Cutlass View Post
    Used to be...Looks like they didn't renew their sponsorship
    Huh? I did'nt know that..
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