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oil ????? synthetic???

This is a discussion on oil ????? synthetic??? within the Firebird / WS6 forums, part of the Vehicle Specific category; Originally Posted by INMY01TA Mobil 1 isn't full synthetic anymore, I wouldn't go that long between changes. Since when? Just ...

  1. #21
    Last of the Breed Pewter02Formula's Avatar
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    Quote Originally Posted by INMY01TA View Post
    Mobil 1 isn't full synthetic anymore, I wouldn't go that long between changes.
    Since when? Just asking because I bought some for an oil change over the weekend, and the box still says "Full synthetic" like it always has... and it was a good 5 months since the last oil change.

  2. #22
    Senior Member INMY01TA's Avatar
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    Quote Originally Posted by Pewter02Formula View Post
    Since when? Just asking because I bought some for an oil change over the weekend, and the box still says "Full synthetic" like it always has... and it was a good 5 months since the last oil change.
    Read here or go to the Bob is the oil guy board. I am now convinced

  3. #23
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    black
    1998 camaro SS

    5w-30 platinum also with k&n oil filter,never any problems,running a zz4 lt-1 crate motor and vortech supercharger.everyone i know runs full synthetic in there f-body

  4. #24
    Junior Member supermando's Avatar
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    I use Mobil 1 Synthetic. I've heard Amsoil is a really good one to use. Anybody tried it?

  5. #25
    Senior Member INMY01TA's Avatar
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    Quote Originally Posted by supermando View Post
    Mobil 1 Synthetic
    Oxymoron there.

  6. #26
    Senior Member Tyler_LS1's Avatar
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    1999 Camaro SS-M6 #1775

    Ive just put in some RP 5W-30 and it seems to work great! but i get more valvetrain noise. compared to the Valvoline 10W-30 Full Synthetic.
    1999 Camaro SS/ Pewter/ #1775 - LS1 6-speed - Predator 3 Custom Tune - Pro 5.0 - LS7 Clutch - 3.90's - Koni's - Strano Springs and Sway Bars - SFC's - Full UMI Chassis and Suspension - LS6 Intake PnP TB - ARH LT's and Kitty Ran Away - Magnaflow.

    12.6 at 112

    http://www.fquick.com/Tyler_LS1

  7. #27
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    I must be weird. I use Castrol GTX 5w30 and Wix filters in everything I drive.

  8. #28
    ls1devil lt1dragon's Avatar
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    use mobil 1 5-30 with bg moa & quick clean.

  9. #29
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    switched

    i switched from valvoline 10w-30 syn to the highly acclaimed mobile 5w-30 syn.

    my 2000 ws6 has not ever ran this bad. worst piston slap.

    i'm gonna try the royal purple. if that doesn't make her run better i guess i will have to look for what i started with.

    i'm gonna have to pay in british pounds though...

  10. #30
    Senior Member Tyler_LS1's Avatar
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    I think the 10W-30 has less noise with piston slap then 5W-30 does.

  11. #31
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    same here

    Quote Originally Posted by Tyler_LS1 View Post
    Ive just put in some RP 5W-30 and it seems to work great! but i get more valvetrain noise. compared to the Valvoline 10W-30 Full Synthetic.
    me too. switched to mobil 10w30 syn, piston slap is at its worse. i can't get valvoline 10w30 syn here in england. my ls1 loved valvoline, quiet, smooth, and no noises of any kind.

  12. #32
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    up tp 10w30

    Quote Originally Posted by Tyler_LS1 View Post
    I think the 10W-30 has less noise with piston slap then 5W-30 does.
    well, tried to see if going from 5w to 10w would quiet down the piston slap but it's the same.

  13. #33
    Senior Member INMY01TA's Avatar
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    Quote Originally Posted by FERNANDO View Post
    well, tried to see if going from 5w to 10w would quiet down the piston slap but it's the same.
    Try Redline 10w30, quieted mine down.

  14. #34
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    limited options

    Quote Originally Posted by INMY01TA View Post
    Try Redline 10w30, quieted mine down.
    unfortunately i'm stationed in england right now. royal purple. mobil, and castrol (non german) are the only synthetics they have on base. locally i will have to pay in british pounds, which will be twice the price due to the exchange rate.

    i was told that you can switch to synthetic but you shouldn't switch back to conventional.

    i'm trying rp 10w30 next week and see how that goes.

  15. #35
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    Quote Originally Posted by FERNANDO View Post
    unfortunately i'm stationed in england right now. royal purple. mobil, and castrol (non german) are the only synthetics they have on base. locally i will have to pay in british pounds, which will be twice the price due to the exchange rate.

    i was told that you can switch to synthetic but you shouldn't switch back to conventional.

    i'm trying rp 10w30 next week and see how that goes.
    You never want to swith to conventional after you have used sythetic. Have you tried AMSOIL by chance. I runit in my Harley and and in my race cars and have no problems at all

  16. #36
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    it depends on what base the oil is... an oil like mobil 1 you can switch.. if you use something like AMSOIL you are not recommend to switch back at all..

  17. #37
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    valvoline syn

    how about valvoline synthetic? i can not get it here in the uk. it's either durablend or back to conventional. i heard that maxlife is partially synthetic.

  18. #38
    member since may 2000 nhraformula's Avatar
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    Quote Originally Posted by Sarge View Post
    IT DOES NOT REQUIRE SYNTHETIC OIL!!!!!!!!!!!!!!!!!!!!!!
    It recommends Mobil1. Called a marketing agreement.
    Or a pimping agreement. Your warranty requires you to utilize API certified oils within viscosity recommended. That would include WalMart SuperTech oils.
    GM does not require any motor it makes to utilize synthetic oil.
    correct with above


    i use conventional 10w30 and zero problems
    2000 nhra edition formula
    a few bolt ons, 379 rwhp
    11.96 @113.25

  19. #39
    Master Mechanic Jims455's Avatar
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    I just bought 6 quarts of Royal Purple for mine...

  20. #40
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    I really like royal purple... i just started to use it about 2 oil changes ago..

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