Synthetic Oil

Discussion in 'Engine & Performance' started by mcclintock89, Feb 7, 2013.

Oil of Choice

  1. Castrol Syntec/Edge

    111 vote(s)
    8.8%
  2. Royal Purple

    192 vote(s)
    15.3%
  3. AMSOil

    186 vote(s)
    14.8%
  4. Valvoline Synpower

    66 vote(s)
    5.3%
  5. Mobil 1

    471 vote(s)
    37.5%
  6. Other

    230 vote(s)
    18.3%
Sponsored By: Moe's Performance
  1. Grad12

    Grad12 Senior Member

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    5w20 rp since it's first change 3 since then. I'll keep posting to the forum when it hits some big mileage or I get a hickup with rp. But I'll be sticking with that for now.
     
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  2. dtru1222

    dtru1222 Senior Member

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    This will probably get burried in the many pages but something that no one ever mention or thinks about is VVT operation.

    It was stated by one of the SRT engineers that a high moly count helps with the VVT operation, and in their SRT blend it has a high moly count. Most brands that I have seen do not. I was running Amsoil XL 5-20 and noticed a much more smoother power delivery when I changed over to the Signature Series which has a higher moly count.
     
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  3. rocket

    rocket Supporting Member

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    what is this signature series you speak of??
     
  4. TomR00

    TomR00 Junior Member

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    I just changed my oil on my 2013 Express, 7,012 miles to Mobil 1 Full Synth and M1-113 filter. What a difference in the engine, runs a lot smoother and I can hardly tell when the ECO mode kicks in.:)

    Wondering now if changing the transmission and axles to full synth would also make any difference.

    TomR
     
  5. hemihustlin

    hemihustlin Senior Member

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    @ rocket: amsoil ss is the top of the line 1 year 25k oil (normal service lol, read the fine print and almost everybody fall in the severe service category which is like 10 or 15 k miles

    The transmission oil is already syn. I would leave it in untill it needs to be changed then you could go with something like redline atf+4, if you had a 6 speed.
    If you have the 8 speed im pretty sure they are "sealed for life" and i wouldnt touch it.

    Gear oil is probably conventional but good quality. Again i would leave it in untill it is due to be changed.
    You could change it right away if you want, but with the little milage you have it seems wasteful. Unless you see obvious signs of contamination when checking the fluid.
     
  6. rocket

    rocket Supporting Member

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    my rear pinion seal started leaking 20k miles after I did the change......take it for what its worth
     
  7. smiley3303

    smiley3303 Super Moderator Staff Member

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    I agree mostly but rear axle is almost certainly synthetic the front could be either. This could have changed but that was the manual read from what I could tell.


    $miley
     
  8. rocket

    rocket Supporting Member

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    I really think it was just it's time......not out of the area of impossible
     
  9. dtru1222

    dtru1222 Senior Member

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    They have the original, XL and SS types of most weights. I went on the "bob is the oil guy" forums and saw some oil analysis sheets that showed that the SS has a higher moly count than the XL so I switched over.
     
  10. rocket

    rocket Supporting Member

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    gotcha ...amsoil product. my only observation would be, if the original was so great.....how did /could they improve upon it?...no hate here.....a million drag racers can't be wrong.
     

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