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Russ Johnson

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  • From
    Pawleys Island SC, USA
  • Present cars
    1988 Porsche 928S
    2012 Porsche Cayenne S

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  1. Hi: I decided to change the transfer case fluid because I also had strange things happening. I thought the power steering pump might be going, a whining grinding noise when turning the wheels. I also experienced that when (tiptronic) downshifting from 3rd to 2nd the engine would rev upwards, then the car would coast, then the revs would go up again as it resumed decelerating. I also noticed resistance to moving forward or backwards from a stop if the wheels were turned (as in parking or leaving a parking space). Several You Tube videos used different kinds of "oil" in the transfer case. My research indicated that Ravenol ATC Synthetic Transfer Fluid TF-0870 from Amazon.com was an acceptable fluid. The bottle actually lists the Porsche 000 043 301 36 Cayenne Transfer Case PL72 T and 000 043 305 63 Porsche Macan 958 & Cayenne 92A as appropriate applications for this product. The Ravenol has a cap with a tube attached. You don,t need a fluid pump, just open the bottle per instructions and you are ready to insert the Transfer fluid into the case. The procedure made an engine oil change seem difficult by comparison. Remove the fill plug, have a catch basin ready & remove the drain plug, wait for the fluid to drain, replace the drain plug (carefully so as not to overtighten) insert the Ravenol fill tube from the bottle into the fill hole, stop when the fluid begins leaking out, replace the fill plug (again do not overtighten, note that it sticks out some before removing) and you're done. The cup on the left is used, on the right as it comes from the Ravenol bottle. Happy Motoring
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