Ford Mustang Forum - View Single Post - MT-82 Transmission Additive Update
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Exslider400's Avatar
Joined: Dec 2012
Location: Tupelo
Posts: 88
Originally Posted by DonJuan692006 View Post
I finally got the bottle added. My 2012 GT/CS has 18k miles on it when I bought it and is sitting at 31k now. I have no idea if the PO did anything with the tranny fluid and I haven't. I went to add the XL-18 with just the front on ramps and when I removed the fill plug fluid started dumping. So I grabbed a quart of QDC from the dealer and made sure the car was leveled out on jacks the second attempt. I used a funnel and tubbing from the engine bay. Added the XL-18 and replaced the QDC that had spilled. I can definitely say shifting is much smoother both cold and hot. A lot of the notchiness I experienced while depressing the clutch and re-engaging the tranny is now gone. I also had a slamming feeling coming from the tranny/DS when under-driving sixth (cruising at 45, releasing the gas, and re-applying) that is all but gone.

I'm still debating switching to Redlines MTL or RP's Synchromax to see if there's any additional improvement using a higher quality fluid vice the QDC/additive mix.
My thoughts exactly. Mtl and xl-18?

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