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ATF brands and types, total confusion!


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Damned confusing! So many conflicting opinions concerning ATF brands and who makes what, etc. Query to those in the know: Is PENTOSIN ATF1 a viable choice to replace all of the fluid in my tiptronic (2001 986S) ?

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Pentosin ATF is a good choise: http://www.pentosin.net/specsheets/Pentosin_ATF1.pdf It is true that ATF fluid only applies to the gearbox section of the Tiptronic. The differentiol section of the Tiptronic is filled with a 75W-90 manual transmision oil made by Shell. It is important that not ALL of the oil can be replaced by ATF fluid!! Beware of that.

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Thanks for the info! Yes it's for the transmission only. I only meant that since the engine and transmission are out of the car, that I would replace all of the fluid including the fluid in the torque converter, around 9 litres in all.

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You can do it of course, but keep in mind that the converter should slide over differend splines. It is important to respect the distance of the converter (height) relative to the bellhousing, during assembly, otherwise it is a certainty that the splines and Tiptronic oilpump get damaged. Also replace the oil seal over the splines/in front of the oil pump, a certain degree of skill and experience is required given the high costs if things go wrong.

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