Michael,
It says specifically to use ATF fluid _and not motor oil_ (see the picture here: https://1drv.ms/i/s!At7BtDHoAfRtnVCbbR3Crxiag1vP). This applies not only to storage, but also to running it. Some other transmissions use motor oil, but not this one. Marek From: CnC-List [mailto:[email protected]] On Behalf Of Michael Brown via CnC-List Sent: Sunday, September 04, 2016 19:58 To: [email protected] Cc: Michael Brown <[email protected]> Subject: Re: Stus-List A4 Slips Out of Gear The Hurth transmission also has a wet clutch similar to the Paragon. Some ATF is wet clutch friendly and acts as a basic lubricant, so using it as recommended by the manufacturer is fine. ATF is a hydraulic fluid with antifoaming properties, doesn't hurt but not applicable in this application. I would guess that wet clutch motorcycle oil would also work well, though no idea if there might be some issue with seals. The oil has detergent properties and such that are not applicable in this application. The cling / film, antirusting and water handling properties of ATF is different from oil. It may be that a storage recommendation is to fill the transmission with ATF, and drain it back to the proper level when going into service. Michael Brown Windburn C&C 30-1 Date: Sun, 04 Sep 2016 09:53:18 -0400 From: Eric Frank <[email protected] <mailto:[email protected]> > To: [email protected] <mailto:[email protected]> Not directly related to A4?s, but about transmissions. My Perkins diesel has a Hurth (HBW-50 -2R) transmission, and the PO recommended using type A automatic transmission fluid. That?s what I have been using, but this discussion has listed motorcycle oil for the transmissions in A4?s. Am I using the proper fluid? - everything seems to be running fine. Eric Frank Cat's Paw C&C 35 Mk II Mattapoisett, MA
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