Red Line DCTF transaxle oil

Discussion in 'Fiesta ST Maintenance' started by hyatt, Nov 24, 2014.

  1. hyatt

    hyatt Active Member

    So, just to seperate it from the Motul Gear 300 thread, I did a little write up on my experience with changing the transaxle oil. Anyway, here it goes:

    I bought my FiST new in April and while the car shifted ok, it was far from the nicest shifting transmission that I’d used. I’d been toying with the idea of swapping the transaxle fluid out for something a little more sporty and I’ve always had really great experiences with Red Line products, so I started looking through their catalog for something that met our weird Ford dual-clutch spec. Unfortunately, they didn’t have anything, but then at SEMA, I wandered past their booth and noticed a new product called DCTF. This seemed like it might be the ticket. I picked up the bottle, and found that it met a Ford/Getrag dual-clutch spec, though not ours specifically. I figured that it was worth a shot, so I got three bottles and arranged to have my buddy do the work at his shop while I took photos and avoided getting covered in gear oil.

    The Fiesta ST is probably the easiest transmission/transaxle oil swap I’ve ever done/had done. Access is super easy for the drain and fill and they both use the same 8mm hex bolt. Both drain and fill plugs were in pretty tight, but this was the first time they’d been opened, all things considered it wasn’t that bad. I can recommend using some cardboard or form-a-funnel on the drain side as it will gush out, hit the control arm and go everywhere. After 11000 miles, the old fluid was a little dark, but not horrible, better than I was expecting. It was very thin, as you’d expect, but thicker than a true ATF (Dexron, etc).

    [​IMG]

    I bought the $10 fluid pump from O’Reilly and it worked like a champ. The pump wouldn’t screw onto the Red Line bottle but it wasn’t too big a deal. The FiST took a little over two quarts of fluid. While I had the car up in the air, I also changed out the lame-duck rear motor mount for the upgraded unit from COBB. The COBB mount is much beefier than the stock unit but because it’s still a rubber bushing, with voids, the vibration isn’t that much worse than stock. It’s noticeable, mostly at idle with the A/C on, but the benefits far outweigh the increase in NVH.

    [​IMG]

    The combination of the Red Line DCTF and COBB mount made my Fiesta shift like an absolute dream. It’s so slick and precise feeling now, with no more clunks or wheel hop under hard acceleration. The day after I changed everything out, I took the car for a track day at Streets of Willow at Willow Springs International Raceway. Even under those extreme track conditions, the car never gave me any problems, I was able to rip through gears and rev-matching my downshifts was easier. All in all, I couldn’t recommend this combination of mods highly enough. Keep in mind though that since the Red Line DCTF doesn’t meet our specific Ford spec, your mileage may vary.

    [​IMG]

    On the shakedown run which took me from Decker Canyon to Mulholland Hwy E to Stunt Rd to Saddle Ranch to Tuna Canyon (best road ever) to PCH. Living in SoCal definitely has its perks!
     
  2. Register or Sign in

    Advertisement Sponsor

     
  3. felopr

    felopr New Member

    isnt ATF= automatic transmission fluid? So why put a auto tranny oil in a manual? or it doesnt matter, btw nice shot there
     
  4. hyatt

    hyatt Active Member

    The Fiesta ST specifies a dual clutch transmission fluid. I don't know why Ford spec'd that for a regular old manual transmission, but dual clutch fluid supposedly has an additives package that is similar to a traditional manual transmission oil but at a thinner viscosity. Hope that answers your question!
     
  5. timboslice

    timboslice Active Member

    Thanks for the write up! Also worth noting is that the Ford DCTF is made out of unicorn blood. It's $40 a quart at my local Canadian Ford dealer!


    Sent from my iPhone using Tapatalk
     
    RDgolfer and hyatt like this.
  6. felopr

    felopr New Member

    i might start taking this into consideration or the motul 300, i like the gearbox but i dont like the clunckiness between shifts, hope changing the oil eliminates this
     
  7. hyatt

    hyatt Active Member

    The COBB motor mount will eliminate a lot of clunkiness between shifts, 1st to 2nd especially. The increase in vibration isn't bad at all really, its mostly noticeable on start up and at idle with A/C on. Totally acceptable trade off for the benefit it provides, in my opinion anyway.
     
  8. felopr

    felopr New Member

    when i say clunkiness is like is not a smooth shift
     
  9. hyatt

    hyatt Active Member

    Yeah, exactly. The fluid plus COBB mount made my shifts super slick and smooth. The mount is seriously worth the money. It's really impressively made and almost a shame to put it under the car where you'll never see it!
     
  10. timboslice

    timboslice Active Member

    I also have the Cobb mount.. I wouldn't say that it eliminates the shift "clunkiness." Rather, it helps with the "firewall slam" that you get with a fast launch or a fast 1-2 shift. It also help a little with wheel hop during the launch by ensuring that the engine stays put.

    The "clunkiness" or "tractor shifting" (as I call it) seems to be alleviated by the fluid change (both the Motul and Redline fluids). Swapping out the shifter cable bushings also helps with this.
     
  11. kbgixxer

    kbgixxer New Member

    What kind of oil do you buy from motul and redline?
     
  12. haste

    haste Member

    Found this stuff for cheap and it meets the specs:

    RAVENOL MTF-2 SAE 75W-80

    Blauparts has it. I can't post a link because this is my first post.
    With their Cyber Monday coupon "WOW2014", 2 liters is coming to 38.67 shipped!
     
  13. moff3tt

    moff3tt Active Member

    I need to do this. I have to give extra attention shifting into second it will grind and pop out. Which is super annoying.
     
  14. ISO100

    ISO100 Member

    It's the same way with the T5 transmission found in older Mustang, Turbocoupe, etc. The syncros have special materials that are similar to automatic transmission clutches.
     
  15. boost rooster

    boost rooster New Member

    So just to clarify, this is the transaxle not the transmission fluid change. Or are we talking about the same thing.
     
  16. ISO100

    ISO100 Member

    Same thing. Since the transmission houses the differential it's called a transaxle. A true transmission just has an output shaft that goes to the rear of the car where the differential distributes power to the drive wheels.
     
  17. moff3tt

    moff3tt Active Member

    Not necessarily to the rear but generally that's the case.
     
  18. boost rooster

    boost rooster New Member

    Thank you, I suspected that was the situation. Im looking forward to doing this though. I'm tired of the chunking.
     
  19. Smokin

    Smokin Active Member

  20. hyatt

    hyatt Active Member

    I've got close to 10k miles and 3 track days on the Red Line DCTF now and I can report that it still shifts beautifully. I'm planning on dropping the fluid at 30k and potentially sending it to Blackstone for analysis.
     

Share This Page