Ford Mustang Forum - View Single Post - MT-82 Transmission Additive Update
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QuadCam
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Joined: Aug 2011
Location: Chino
Posts: 5
 
Quote:
Originally Posted by Tvanpool View Post
Adding only the XL18 to your old fluid will be a waste of money and time.
You will see far more improvement by changing the trans fluid to QDC. Then the XL18 will improve on that a little.
I changed the fluid in my 12 GT after driving the car for nearly 2 years and it almost eliminated the 2 gear roughness, a month or so later I added the XL18 and I haven't had any 2 gear roughness since.
Thanks for the info, Tvanpool!

Now, is this my best course of action, or are there any opinions about some other fluid such as Royal Purple or Redline, etc? I can still take the XL_18 back for a refund.

2012 GT Premium, 400A, Kona Blue, manual, electronics pkg, 3.73s, Brembos, no spoiler, no stripes.
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