I'm trying to find out what the proper lub is for the Clark 285 5 speed manual transmission. Book at the parts house says ATF for an Allison, 50wt for others but no clark listed. Someone suggested 90wt, others 50wt and one guy tells me it uses ATF.
The PTO was removed by the PO and it looks to be refilled with 90wt. It's difficult shifting.
Was clark/allison the same?