The instructions in that "service manual" won't get anywhere near all of the fluid drained.  Joe_Black has a good tranny fluid change HOWTO on his website.  The procedure is fairly easy, and it's well worth the effort.  I switched over to AMSOIL ATF a couple months ago and I couldn't be happier.
Would anyone happen to have some good instructions on how to change the filter?
				
			 
			
		 
			
				
			
			
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