>>Tranny Fluid Info and Experimenting Thread<< (Amsoil, Redline, USC, etc.) - Page 25
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This is a discussion on >>Tranny Fluid Info and Experimenting Thread<< (Amsoil, Redline, USC, etc.) within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; 06wrx4me.... thanks for the 24 page re-cap, uber helpful and time saving. I have another question, when should the first ...

  1. #361
    Lando Calrissian DemonWRX's Avatar
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    06wrx4me.... thanks for the 24 page re-cap, uber helpful and time saving.

    I have another question, when should the first change in tranny and diff be for the '11 WRX? That one Cobb article (which apparently they took down), as well as a poster in the 'Change to Syn now' thread, indicate that there is no need to wait to change over....then there are others that post you should run stock till the first 30K to break it all in.

    FWIW, I am planning on going Subaru Extra S unless someone thinks there is better to be had....currently stage2, nothing special.
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  3. #362
    Registered User Pavia's Avatar
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    You can change anytime after initial new car breakin period, so your good.
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  4. #363
    Registered User WRXpa's Avatar
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    Quote Originally Posted by 06wrx4me View Post
    Now at page 24 we have come to some conclusions:

    * We've decided Uncle Scotty's cocktail shifts nice for a while but breaks down really fast and needs really short change intervals.
    --Also don't think syncromesh needs to be in the blend
    --There is also concern it may cause extra wear

    * Redline Lightweight Shockproof works well in the 5MT but not the STI trans (slinger lubrication versus pump)
    --Seems to work just as well straight as mixed

    * Straight Severe Gear 75w90 from Amsoil is not good in cold weather, but works well when mixed with shockproof

    * SD_GR still loves his Valvoline conventional 75w90

    * Subaru Extra S is the greatest gear oil to put in a stock Subaru
    --It works well for a long time, shifts great, but is not sold in the quart. Its sold in the 5 gal drum, but many Subi tuners and dealer have it

    FWIW Redline 75w90NS is what you'd run in the 5MT, but in non-mixed form it hasn't netted near the result of the Extra-S. Don't use MT90.
    Thank you for this . Is there any point in changing the fluid at 1k miles? I'd like to get rid of the stubborn 1st and reverse gears. Otherwise, no issues with the tranny.
    I have a low Reynolds number

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  5. #364
    Moderating on the run! Big Sky WRX's Avatar
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    I don't think you'll see much of a difference w/ 1st and R w/ a change of fluid- this being my 3rd WRX I've simply gotten used to it - now you could see a difference in 1st if your talking downshifting from 2nd w/ a fluid swap, not from a standstill however
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  6. #365
    Registered User WRXpa's Avatar
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    Quote Originally Posted by Big Sky WRX View Post
    I don't think you'll see much of a difference w/ 1st and R w/ a change of fluid- this being my 3rd WRX I've simply gotten used to it - now you could see a difference in 1st if your talking downshifting from 2nd w/ a fluid swap, not from a standstill however
    I may end up swapping it for synthetic since I've read the WRX's come with regular fluid.
    I have a low Reynolds number

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  7. #366
    He simply abides. SD_GR's Avatar
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    That time again... The parts store, bless them, didn't have enough of the white label Valvoline regular 75W-90 bottles so I got a bottle of grey Valvoline synth to top off the gearbox (it usually takes a touch over 3 bottles since gear oil is nearly impossible to drain, so I just used the synth for the touch and trust that products from the same firm are miscible -- not that anyone else worries at all about this stuff since people come up with cocktails and such anyway).

    The rear doesn't matter anyway so it got M1 this time, since that's what they had and I'd rather use M1 in the rear diff than in my gearbox.

    I dutifully used silicone on the rear diff drain plug because I'm a victim that believes everything in the manual, including that a viscous fluid will miraculously leak out of a drain plug tightened to 45 Nm without the magic silicone on the threads.

    Car shifts fine.
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    Quote Originally Posted by DUB View Post
    I know. No offense intended to TiC or any of their supporters, but you would have to be a complete idiot to spend $80+shipping for 4 qts of that gear oil. You can get it from SubaruGenuineParts.com for ~$150 for 20 qts.

    SubaruGenuineParts.com = $7.50/qt
    TiC = $20/qt

    Can you post a link, I looked there and did not find the Extra S



    I still do want to use the Extra S. The problem is I don't know of any local people who would want to buy the rest off me. All my Scoobie owning friends are 'take it to the mechanic for service' type of folks. I certainly don't want to have to deal with putting it in a different container and shipping it to recoup my costs.

    We'll see, maybe if I'm unhappy w/ the Red Line mix (which I don't foresee) I will take the plunge for the Extra S.

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    Trying the Mobil Delvac GL-5 synthetic (but lacks friction modifiers) since the Torco GL-6 the tranny shop put in went to hell in a coupla thou miles. About 1500 on it so far and it gets better everyday. Very much like extra-s, but others say it does not do as well in cold temps as the SOA goop.

  10. #369
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    I have been using the Valvoline SynPower 75w-90 for my tranny fluid and its been great. Very smooth shifting.
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    Just replaced my tranny fluid with the stock Subaru Extra-S 75w90 fluid. I went out for a short drive just to test out the shifting. Well, I am impressed with the fluid. Overall I would say the shifting is about 50% better than before. My car is a 2014 WRX with only about 2000 miles. Surprisingly, the stock fluid with only 2000 miles is dirty and there were some fine metal shavings adhered to the magnetic portion of the drain plug.

    I put in about 3.7qts and my dip stick now shows the fluid lever a bit over the upper hole. I hope that is ok.
    Should I drain out some of the fluid?

  12. #371
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    Just replaced my tranny fluid with the stock Subaru Extra-S 75w90 fluid. I went out for a short drive just to test out the shifting. Well, I am impressed with the fluid. Overall I would say the shifting is about 50% better than before. My car is a 2014 WRX with only about 2000 miles. Surprisingly, the stock fluid with only 2000 miles is dirty and there were some fine metal shavings adhered to the magnetic portion of the drain plug.

    I put in about 3.7qts and my dip stick now shows the fluid lever a bit over the upper hole. I hope that is ok.
    Should I drain out some of the fluid?

  13. #372
    He simply abides. SD_GR's Avatar
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    When I had the same concern with my 2002 a more experienced member pointed out that the WRX gearbox is not a closed system; it's vented. You should therefore have no problem in a WRX. The STi uses a pump so I'd drain that.
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    I think I will take some out tonight so I can sleep better.

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    Bumping this back from the dead but I think I have some valuable testing information to provide. I did a long-term analysis in my WRX changing the transmission oil every 20,000 miles. I used three oil combinations: 1) 2 quarts redline 75W90NS and 2 quarts lightweight shockproof, 2) 2 quarts Amsoil SVG gear oil and 2 quarts lightweight shockproof, 3) 4 quarts Subaru extra S 75W90 gear oil.

    The results are pretty telling. Some of the key categories showed significantly higher levels with the redline/amsoil mixes versus the extra S. Iron and silicone levels were 2 to 3 times higher. Zinc was 2 to 6 times higher. With the mixes Molybdenum and Calcium levels were extremely high, which most likely led to insoluble levels of 2 to 6 percent (not what you want). The viscosity for the mixes were much higher than what you would normally want and the flashpoints would get down to the lower limit or below it.

    Basically the subaru extra S hands down beats the mixes. Using a mix in your transmission is not a good long term application, it just masks a current problem and accelerates wear in your transmission. Stick with a single oil that works well for you.

    You will also notice that since I could not flush out the transmission the Subaru extra S oil picked up some contamination from the previous mixes that had been used in the transmission as Molybdenum and calcium counts are high after use, plus it was dark in color when I changed in it. I just did a drive train swap on my car so I cant run another test on a second extra S run but I am willing to bet the results would be even better with less contamination from the prior mixes.


  16. #375
    He simply abides. SD_GR's Avatar
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    Repped.

    People, rep this user!

    This is VERY VALUABLE information.

    It goes toward proving what many have suspected all along -- the guru mixes are at best questionable (I'm being lenient). Reports like this should be stickied.

    THANK YOU!
    WRX Info Links, Courtesy TheJ
    The world breaks everyone and afterward many are strong in the broken places. Ernest Hemingway
    I lied. I cheated. I bribed men to cover the crimes of other men. I am an accessory to murder. But the most damning thing of all... I think I can live with it. And if I had to do it all over again - I would. Benjamin Sisko
    DISCLAIMER: Opinions expressed are the author's alone and are inherently worthless.

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