Testing Toyota WS vs Redline D6 vs Aisin WS

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Robotprince, Feb 19, 2020.

  1. Robotprince

    Robotprince New Member

    Joined:
    Sep 24, 2019
    10
    5
    0
    Location:
    Hollywood, Fl
    Vehicle:
    2015 Prius v wagon
    Model:
    Five
    Hello everyone.

    I have to say that this Prius is a great car, cheap to fix, and has a bulletproof transmission.

    I tried near 4 new quarts of Toyota WS at 100k, lasted nearly 10k without getting dark.(still had a mild wine)

    Tried 4 quarts of D6 at 110k and the trans became very quiet. The fluid actually conducted a little bit of electrical current enough to feel a slight jerk in the drivetrain by engine revolution. (Not a good feeling so it came out)

    Tried 1 quart of Toyota ws with 3 quarts of D6 and it felt smooth without any electrical disruption. Lasted 12k miles without getting dark.

    Tried near 4 quarts of Aisin WS and the transmission whine and electrical disruption was silenced and has been running perfect for 70k miles (still bright red)

    Prius V at 180K running very smooth.

    Toyota WS (40*C= 23.3 cst /100*C =5.3 cst)
    Redline D6 (40*C= 28.4 cst /100*C =6.0 cst)
    Aisin WS (40*C= 34.7 cst /100*C =7.3 cst)

    Cst= centistoke measurement (the greater the number the slower the motion [but better protection in my opinion])

    Clearly Aisin developed their own fluid for this very reason. Toyota is skimping by manufacturing WS elsewhere. Aisin is the clear winner.
     

    Attached Files:

  2. Raytheeagle

    Raytheeagle Senior Member

    Joined:
    Jul 1, 2016
    10,569
    14,399
    0
    Location:
    Bay Area, California
    Vehicle:
    2019 Prius Prime
    Model:
    Prime Plus
    Here's the red cape @Mendel Leisk :).

    WS is what came in the transmission, so I replace with what came with it;).

    For how little you have to do this activity, why not replace with what's there to start with (y).
     
    m.wynn, Grit and Mendel Leisk like this.
  3. edthefox5

    edthefox5 Senior Member

    Joined:
    Jul 25, 2007
    8,408
    3,833
    0
    Location:
    Clearwater, Florida
    Vehicle:
    2007 Prius
    Model:
    Two
    Baloney.
     
    m.wynn and Grit like this.
  4. Robotprince

    Robotprince New Member

    Joined:
    Sep 24, 2019
    10
    5
    0
    Location:
    Hollywood, Fl
    Vehicle:
    2015 Prius v wagon
    Model:
    Five
    This baloney you speak of does it come with cheese???
     
    Threej likes this.
  5. SFO

    SFO Senior Member

    Joined:
    Feb 7, 2017
    3,191
    3,296
    0
    Location:
    Northern California
    Vehicle:
    2007 Prius
    Model:
    N/A
    How many miles per month are you racking up on this gen3 v ?

    Have you had a chance to read this @Tim Jones v thread: I will go down in Prius Trani History | PriusChat

    Would be interesting to know why the fluid darkens so much faster on the v.
    Could you please describe what your perceived transmission whine and electrical disruption sounds like, and at what speeds.

    I've noticed a particular gen3 which has a type of whining noise at slower speeds (under 15 mph), it sounds somewhat like a distant emergency alert PA horn. One other gen3 owner rode in this vehicle and thought it sounded fine/normal, but I'm still not fully convinced. Maybe if I took a ride in a different gen3 it would offer me a better perspective on what normal might be.
     
    Grit and Robotprince like this.
  6. Robotprince

    Robotprince New Member

    Joined:
    Sep 24, 2019
    10
    5
    0
    Location:
    Hollywood, Fl
    Vehicle:
    2015 Prius v wagon
    Model:
    Five

    This Prius has been used as a cross country travel car probably racking 100k per year. The whine came as soon as Toyota ws started to be used as the majority of the fill. The whine goes away completely because aisins ws custom formula, which has acrylamide and a few other formulations that actually works wonders, went from whine to complete silence. Who would of thought Toyota would try to pull this stunt on the fleet. That's why they don't recommend fluid changes. It's because Toyota ws (which corporate determined the fluid of choice) wears down too quickly as compared with the original fill(aisin ws). For people to do many east to west coast trips, this is important knowledge.. On the other hand, redline d6 is using a higher volume of additives to basestock oil which allows it to be more conductive, which prevents high heat static discharge. Static discharge is the reason behind gen1 copper winding coat failures. So the electrical current somewhat gets intermittently grounded not enough to set off a dtc, but enough to feel a minor burp in the electric motors. It also sounds like it's not healthy. Aisin is formulated kinda like only towards their transaxles only.
     
    #6 Robotprince, Feb 19, 2020
    Last edited: Feb 19, 2020
    SFO likes this.
  7. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    40,587
    29,083
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Well cat's out of the bag now... :whistle:
     
    pjksr02, edthefox5, m.wynn and 4 others like this.
  8. Grit

    Grit Senior Member

    Joined:
    Aug 22, 2017
    3,978
    3,113
    1
    Location:
    Wilkes Land
    Vehicle:
    2012 Prius
    Model:
    Four
    OP works ASIN WS. GET HIM!!!
     
    Mendel Leisk likes this.
  9. Robotprince

    Robotprince New Member

    Joined:
    Sep 24, 2019
    10
    5
    0
    Location:
    Hollywood, Fl
    Vehicle:
    2015 Prius v wagon
    Model:
    Five
    Update. I was able to have a one on one with an aisin tech and they mentioned that you need 1 quart of a proprietary 50w pure hydrotreated petroleum break-in fluid(Toyota 50w or Lucas oil stabilizer). The rest is aisin ws or Idemitsu Matic-J fluid(they're the same exact chemical formula and come from the same factory) You're welcome.
     
  10. edthefox5

    edthefox5 Senior Member

    Joined:
    Jul 25, 2007
    8,408
    3,833
    0
    Location:
    Clearwater, Florida
    Vehicle:
    2007 Prius
    Model:
    Two

    Baloney on the Redline. My car has been on Redline D6 for 13 years and 150,000 miles. Works perfect.
    And static discharge inside a trans full of trans fluid? Burping motors from shorts? Lol.......what complete nonsense.

    Windings blowout from extreme current loads pulled through them. High current and stalling the mg.
    Like flooring the car going up a steep hill with low battery power. G2s have under powered mgs unlike the g3 and on where power was greatly increased.

    Many people on this site have used all kinds of different trans fluid especially the lubegrard that has good reports. The trans could care less.

    G1 and G 2 windings don’t even touch the fluid. This has been proven with pictures on Weber automotive school on YouTube. The g3 and on do touch the fluid but doesn’t matter as the windings have extremely tough coatings and they greatly improved the iinverter cooling efficiency by using separate inverter rad.

    You should watch those you may learn something.
     
    BruceInOKC likes this.
Loading...