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5w30 or 10w30?

This is a discussion on 5w30 or 10w30? within the Internal Engine forums, part of the LSx Technical Help Section category; I know the dealer recomends 5w30 oil but i recently switched from 10w30 to 5w30 and noticed alot more lifter ...

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    Member 02fbody35th's Avatar
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    5w30 or 10w30?

    I know the dealer recomends 5w30 oil but i recently switched from 10w30 to 5w30 and noticed alot more lifter noise. so i was wondering what you guys run and with what results. Is it ok to run 10w30. i just dont like all the lifter noise.

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    Quote Originally Posted by 02fbody35th View Post
    I know the dealer recomends 5w30 oil but i recently switched from 10w30 to 5w30 and noticed alot more lifter noise. so i was wondering what you guys run and with what results. Is it ok to run 10w30. i just dont like all the lifter noise.
    Well I believe 10w30 becomes lighter as it gets hot. For me I went from the factory recommended 10w30 down to 5w30. Not an ls1 but the results are good. I did'nt get the lifter noise but I did get a noticablely lower operating temp. My gas mileage improved to about 1.5-2 mpg.. Lifter noise may go away over time and continued use depending on the mileage of the engine. Many folks use a 0wXX with good results. You may want to do a UAO and see which is best for yours..
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    Senior Member tatertot91's Avatar
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    valvoline syn power 10-30, i have very little valvetrain noise

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    Penzoil Platinum 5W-30 Synthetic. I have the usual start up noise and then she quiets down after a little heat builds in the engine.

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    ʢ ൧ ൨ ൩ ൪ ൫ ൬ ൭ ൮Ր Ց Ւ Փ Smittro's Avatar
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    Oh I use castrol gtx non synth.. I've been using it 20 years never any oiling issues..

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    Quote Originally Posted by Smittro View Post
    Oh I use castrol gtx non synth.. I've been using it 20 years never any oiling issues..

    ^^ Same thing I use in all our DD's -- never had any issues either and things seem to stay nice and clean under the valve covers and such.

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    Quote Originally Posted by pajeff02 View Post
    ^^ Same thing I use in all our DD's -- never had any issues either and things seem to stay nice and clean under the valve covers and such.
    as you know I had my top end apart over the winter and can tell you other than the usual brown hue on the oiled surfaces of the block there was no sludge build up of any kind.. 80+k on the ticker too. Got her with 26ish-k on the clock.

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    Senior Member karpetcm's Avatar
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    Valvoline Syn here and no issues so far 10w-30

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    Member zeetwentyeight's Avatar
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    Im running a mobil one 5w30 and its noisy as hell i think im gonna try a straight 30 next time unless some one has a good reason to object to that one

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    King 0f n00bz shady milkman's Avatar
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    Quote Originally Posted by zeetwentyeight View Post
    Im running a mobil one 5w30 and its noisy as hell i think im gonna try a straight 30 next time unless some one has a good reason to object to that one
    fuck mobil 1 ..............go penz

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    Quote Originally Posted by zeetwentyeight View Post
    Im running a mobil one 5w30 and its noisy as hell i think im gonna try a straight 30 next time unless some one has a good reason to object to that one
    Tight tolerances don't always like the heavy stuff and can actually do more harm than good sometimes. I don't mess with mobil 1..

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    Member 02fbody35th's Avatar
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    well it seems like the guys running 5w30 have the same valvetrain noise as i do and the 10w30 guys have less so i think im gonna switch back to a 10w30 on my next change. thanks for the replies guys.

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    Member zeetwentyeight's Avatar
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    Quote Originally Posted by shady milkman View Post
    fuck mobil 1 ..............go penz
    I sell about 100 gallons of platinum and penzoils new ULTRA a day, i used to run it till i started getting water in my oil

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    Junior Member xTAWS6X's Avatar
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    I run 20w-50 VR1

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    Quote Originally Posted by xTAWS6X View Post
    I run 20w-50 VR1

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    Junior Member xTAWS6X's Avatar
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    Quote Originally Posted by Smittro View Post
    No love?

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    Quote Originally Posted by xTAWS6X View Post
    No love?
    lol Nah that's just some heavy stuff man. wow

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    Junior Member xTAWS6X's Avatar
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    Quote Originally Posted by Smittro View Post
    lol Nah that's just some heavy stuff man. wow
    it sticks real well

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    Smiles for 9.5 Years cammed goat's Avatar
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    Mobil 1 or Castrol Syntec. Both 5w30

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    King 0f n00bz shady milkman's Avatar
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    Quote Originally Posted by zeetwentyeight View Post
    I sell about 100 gallons of platinum and penzoils new ULTRA a day, i used to run it till i started getting water in my oil
    really ...PP has been great to me for the year+ ive been using it.

    i just changed my oil yesterday with ultra 5w-30 ..we will see how that goes

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