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Old 09-23-2012, 05:49 PM   #31
FGLLMX
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Our DTC is a dry clutch system, VW/Audiīs DSG as used in the GTi/GLI is a wet clutch system where the clutches are oil bathed for operation and cooling. In Fordīs DTC, oil is not used for continuous clutch operation and is only used for gears and actuators, so its oil does not degrades as fast and does not requires to be changed as often as VWīs.

I used to own a 2007 VW GLI with the wet clutch DSG and as per VW requirements its DSG oil was to be changed every 40,000 miles.

However, neither Fordīs DTC or VW/Audi's dry clutch DSG require such frequent changes since they use their oil only for internal lubrication like a manual transmission and not for the clutches operation.

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Old 09-23-2012, 06:25 PM   #32
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Originally Posted by FGLLMX View Post
However, neither Fordīs DTC or VW/Audi's dry clutch DSG require such frequent changes since they use their oil only for internal lubrication like a manual transmission and not for the clutches operation.

I would like to add that the Ford transmission oil is fully synthetic.

Synthetic oil in a manual transmission (or dry DCT) has a very long life.
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Old 09-23-2012, 06:27 PM   #33
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Originally Posted by jamnesta View Post
To me this is the most sensible post. With all the concerns about this transmission, not the least of which includes "grinding noises" (usually resulting in metal shavings ) there would seem to be little room for debate...?
The "grinding noise" reported by some people is actually a noise made by the clutch assembly (which does not use any lubrication).
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Old 09-23-2012, 06:42 PM   #34
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Originally Posted by Kabigon View Post
The "grinding noise" reported by some people is actually a noise made by the clutch assembly (which does not use any lubrication).
True, but it's been happening when they have seal leaking issues... I'm not quite sure how they're related, though. Does the leaking fluid get into/on the clutch and ruin it that way? Whatever it is, the TSB calls for new seals and clutches (as well as the adaptive learning cycle) when there is transmission fluid leaking from the seal.
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Old 09-23-2012, 08:09 PM   #35
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Originally Posted by Tiger-Heli View Post
Actually, with the splash-shield, under cover, most budget oil change shops probably lose money on a Focus oil change.
i wouldnt bet on it. If you go to a quick oil change place, make sure you check the splash shields and make sure they didnt just break or lose the fastners. this is known to happen. always have some spares in the garage jsut in case.
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Old 09-23-2012, 08:58 PM   #36
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u will find it hard to find a place to touch/change your transmission fluid at 100k miles, let alone 150k miles. its 150k miles at normal driving conditions, what is normal driving? if you change the maintenance program to excessive idling/real driving conditions im guessing its showing it about every 30k miles. on my own vehicle i would do it every 50k miles.
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Old 09-23-2012, 09:07 PM   #37
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Originally Posted by sjdwales View Post
u will find it hard to find a place to touch/change your transmission fluid at 100k miles, let alone 150k miles. its 150k miles at normal driving conditions, what is normal driving? if you change the maintenance program to excessive idling/real driving conditions im guessing its showing it about every 30k miles. on my own vehicle i would do it every 50k miles.
If your car is a traditional planetary automatic transmission with a torque converter then yes you likely need to change the fluid every 30k or less. However the DCT is essentially a manual transmission form a lubrication stand point and no one usually changes the transmission fluid in a manual at 30k as it isn't broken down at that point the DCT should be fine following the same intervals. The old transmission uses a lot more fluid and also runs hotter due to the torque converter and oil pump, but the DCT is more akin to a manual transmission with less than 3 quarts of Dual Clutch fluid which is similar to MTX fluid.
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Old 09-23-2012, 11:07 PM   #38
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Quote:
Originally Posted by PratoN View Post
True, but it's been happening when they have seal leaking issues... I'm not quite sure how they're related, though. Does the leaking fluid get into/on the clutch and ruin it that way? Whatever it is, the TSB calls for new seals and clutches (as well as the adaptive learning cycle) when there is transmission fluid leaking from the seal.
Every so often (at low speeds and low engine RPM) I hear the noise from the clutches that I believe people are referring to as the "grinding noise". Otherwise, I have no problems whatsoever.

I'm not sure if a leaking oil seal makes it worse but I have read posts from some folks that have had their clutches replaced and they say that the grinding noise is gone.

The point of my previous reply is that the "grinding noise" is not something related to the transmission "box" itself so changing the oil more frequently is probably not necessary or helpful.
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Old 09-24-2012, 10:44 AM   #39
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FWIW - it was previously pointed out the the Focus manual under severe conditions specifies "30K fluid change - (except Focus)", which implies the severe limit for the Focus is 150K also (and make you wonder why the Fiesta isn't excluded also, but ...)
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Old 09-24-2012, 10:46 AM   #40
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$200 @ 30K is ridiculous. VW doesn't even recommend changing DSG fluid until 40K miles. Rates for that service at a VW dealership range anywhere from $250 to $500. Parts alone cost $135 for the DSG fluid change.

Ford has cheaper parts, less fluid in the transmission, and cheaper labor rates. The VW fluid costs about $20 a liter, and you need six liters. They also recommend a specialized tool for changing the fluid (It costs over $100). I was able to make a tool from $15 worth of hardware store parts and do the maintinence for under $150, plus the cost of pizza and beer for a friend.
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