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					Originally Posted by Chris Preston  Check out this link - scroll down to the bottom for the chart with the list of fluids, and a second diagram showing what goes where.http://www.ferret-fv701.co.uk/useful_info.htm 
Hope this helps.
 
Cheers,
 
Chris Preston, 
Victoria, BC | 
	
 Chris, That's the link that says I should be using ISO 10 or 15 viscosity grade oil in the fluid coupling, which is a very thin, quite specialized oil for high speed spindle bearings. It's MUCH thinner than the ATF that's in there now, which has 30 grade viscosity. 
I did some more searching and the consensus, especially over on HVMF, is that OM-13 spec oil is indeed ISO 10 or 15 viscosity grade. 
I suspect the heavier ATF is contributing to the quite high drag I get from the fluid coupling, especially when engaging 1st and 2nd gear at a standstill.
Anybody know how I can drain the fluid coupling without having to split the engine and gearbox?