Originally Posted by barney
				
			
			the lt 85 and lt95 are two very different gearboxes.
the reason the '95 needs the lighter engine oil is that it uses a mechanical oil pump to circulate the oil which is driven by a nylon coupling (don't ask me why). this coupling cannot handle the extra load put on it by a thicker oil and often strips out, making the pump inoperative and thus shortening the life of your previously bulletproof gearbox. the manuals tell you which oil to use, is doesn't get any more black an white than that.