Am going to change the clutch, pressure plate, bearings and rear oil seal in the next week or two. Factory book says not to change oil in the transmission (5 speed), and there appears to be no maintence schedule for an oil change in the owners manual. Would seem to be the thing to do since it will be out on a jack, easy to get to and has about 94000 miles on it. ( 1981 ). Might even save a bit of an oil spill on my concrete while wresling the transmission out. What kind of advice would you give to me? Save money on the oil or not? I will assume I can get new oil from a Toyoto dealer. It might be time to also change the differential oil, since I will be down for a couple of days. Same question for it also, yes or no? Thanks for reading and thank you for any advice.