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Old 03-09-2013, 08:26 AM   #1
UnleashedBeast
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Require detailed information on dual clutch transmission

Hello all,

I am beginning detailed lubrication research and testing on Ford's new dual clutch transmission in the 2012+ Ford Focus. I know this has been a problematic transmission, as mine makes weird noises on slow speed cornering because it doesn't naturally shift into lower gears to put less strain on the transmission.

What I have noticed....

When the transmission is colder (fluid is more viscous), the transmission is quiet. When it gets hot, noises occur. This leads me to believe that the transmission lubricant viscosity is insufficient at full operating temperature and needs to be increased by a few cSt (centistokes).

Here is the information that I require....

1. I need the exact model number and manufacturer of this transmission
2. I need schematic exploded views of the transmission if possible with parts list
3. I would prefer to see photos of drain and fill ports on this transmission.

Does anyone on the forum have any of this information that they can provide for my research and testing? I will be using different lubricants in the transmission for long term testing.


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Old 03-09-2013, 02:15 PM   #2
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What leads you to believe that the noises that you are hearing are coming from the "gearbox" and not the (dry) clutches?

I don't see why the gearbox itself (DCT minus the clutch assembly and actuators) should be any noisier than a manual transmission.
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Old 03-09-2013, 02:40 PM   #3
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Yeah it could be the organic surfaces of the clutch that harden when up to operating temp causing more vibration/noise.
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Old 03-09-2013, 02:58 PM   #4
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How is your Russian,...... try google translate
http://ffclub.ru/topic/281674/

103 pages of Russian owners with the same 2.0GDI and Powershift Focus as North American spec, and same symptoms.
http://ffclub.ru/topic/260299/#comments
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Old 03-09-2013, 03:33 PM   #5
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My Russian stinks!

It very well could be the clutches, but doesn't hurt to test.
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Old 03-09-2013, 03:38 PM   #6
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http://www.focusfanatics.com/forum/showthread.php?t=244444


http://www.getrag.de/media/0000001557.pdf
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Old 03-09-2013, 04:18 PM   #7
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Nice .pdf
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Old 03-09-2013, 11:34 PM   #8
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I am following the thread, the only observation that I have is that it's supposed to be an automated manual but the fluid recommendation is not for the manual trans fluid but the special dual clutch automatic trans fluid. I'd like to know why and what the differences are.
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Old 03-10-2013, 08:18 AM   #9
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Quote:
Originally Posted by PandT View Post
I am following the thread, the only observation that I have is that it's supposed to be an automated manual but the fluid recommendation is not for the manual trans fluid but the special dual clutch automatic trans fluid. I'd like to know why and what the differences are.
I agree 100%. This is a dry clutch setup, not a wet clutch. Most likely, the internals of this transmission will tolerate an increase in viscosity and a change in additive content. Ford is about ultimate fuel economy on the tests dyno, not ultimate durability through the years. I've witnessed this with their choice of engine lubricants in some cars.

Using "sufficient" lubricants gained fuel economy and insured the buyer had to buy another car again one day. They also gain CAFE credits from the federal government. Repeat business theory.

Using "best" lubricants were more expensive, retained or gained even more fuel economy, and allowed the engine to last up to twice as long.
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Old 03-10-2013, 08:21 AM   #10
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It completely bewilders me that one would start ANOTHER thread on the DCT....
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