Those with Tiptronic transmissions, particulary 3.0's....
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From: Mansfield, MA
Those with Tiptronic transmissions, particulary 3.0's....
Have you had your transmission fluid changed and if so what mileage did you have it changed at? I am at 79K and am thinking about having it done in the next few thousand miles.
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I performed the first trans fluid and filter change at 35K miles....
and it's due again now at 55K miles. I use Pentosin ATF-1 fluid instead of the OEM fluid, it has better shift feel with less clutch slip. (ATF-1 is on the ZF approved fluids list for synthetic fluids.) With the second and subsequest fluid changes, the amount of remaining OE fluid mixed with the ATF-1 will be almost none. For some reason, the 3.0L has had some torque converter clutch problems occuring, but typically is evident at 30 to 50K miles.
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That is what Audi claims, but the technical facts don't support that claim as ....
correct and is not supported by the technical literature or historical experience relevant to the issue. The "Lifetime Fill" for the Tip ZF 5HP19/5HP24 and the newer 6HPXX tip transmissions, in the context used by Audi, really means "Until the transmission fails".
There is NO way dirty fluid can compare with fresh fluid. Dirty used fluid, exhibiting the combined accumulated effects from reduced viscosity, lost lubricating film strength, contamination with clutch friction material, metallic wear particles and corrosive oxidation chemical changes, does not have the required fluid properties needed to protect the transmission during operation. The cumulative results of using dirty fluid is not linear. As fluid deterioration increases, the resulting loss of protective anti wear properties causes a step change increase in transmission stresses. At some point, the contamination and lost fluid properties are not sufficient to withstand the stress of operation and will cause early transmission failure.
Fluid replacement on a reasonable change interval is the only way to avoid the destructive effects of dirty used fluid, to extend the "like new" operational condition and reliable performance of the trans as long as possible.
There is NO way dirty fluid can compare with fresh fluid. Dirty used fluid, exhibiting the combined accumulated effects from reduced viscosity, lost lubricating film strength, contamination with clutch friction material, metallic wear particles and corrosive oxidation chemical changes, does not have the required fluid properties needed to protect the transmission during operation. The cumulative results of using dirty fluid is not linear. As fluid deterioration increases, the resulting loss of protective anti wear properties causes a step change increase in transmission stresses. At some point, the contamination and lost fluid properties are not sufficient to withstand the stress of operation and will cause early transmission failure.
Fluid replacement on a reasonable change interval is the only way to avoid the destructive effects of dirty used fluid, to extend the "like new" operational condition and reliable performance of the trans as long as possible.
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