Hey, First post and first pathfinder here. Picked up at 2001 pathfinder se with 244km for 1500 a few weeks back. real nice shape just getting used to her now. Would like to change the rear diff, front diff, transfer case, and transmission fluid as it looks as if it has not been done in 100,000km from the records that came with the truck. I have access to unlimited 75/90 semi synthetic gear oil, and was hoping to be able to use this in all, if not most of these drive train fluid changes. I called every dealer in town and really never got a straight answer along with a mix of what fluids to use. One saying my 75/90 semi synthetic would be ok for all applications. Others of course recommend Nissan fluids. I am not opposed to buying different weight fluids if needed, just the ease and access of the 75/90 semi synthetic is appealing. I did hear from one dealer the transfer case runs Dex 3 ATF. Any stories of your fluid change? what did you use? I keep hearing that in 2001 full synthetic gear oil did not yet exist and therefore shouldn't be an issue. also about brass syncros being eaten by the wrong fluids. Thanks so much everyone!