|  06-28-2018, 04:54 AM | #6 | 
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				Join Date: Jun 2016 Location: England 
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					Originally Posted by maytag  I wouldn't put "slick 50" in anything, personally.  Oil additives are by very definition "band aids", and I've seen them do much more harm than good, over the years.   
 I went through this with my case recently, when I acquired it.  I did a TON of reading, because I'm a royal purple and redline oil fan, and I intended to use one of those products in the gearbox.  I eventually had to concede; with the preponderance of bad experiences using anything other than Porsche OEM fluid in the gearbox, that I didn't want to do it twice.  I hit up suncoast and used the OEM.  I've been very, very glad I did.
 
 Ymmv, but that's my opinion.
 
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thanks did it make a difference to the operation of the box?
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