I sorta already bought the 75w90ns so I will stick with that. Many people said it fixed their grinding problem, but like I mentioned before it's probably the synchros anyway. Just seeing if this will work.
I unscrewed the cover and have acess to everything now. There seems to be a discrepancy, however. I have attached some pictures for reference.
In the service manual, it shows a picture of the fill hole. In the tutorial, it shows a different hole for this. Which one do I use?
The service manual matches with the second one.
The tutorial matches with the first one.
I don't want to use the wrong one. Although it said that they mix (differential and transmission) but I need to use the right one so I know how high it needs to be.
I also am still unclear as to how I'm expected to get the fluid into one of those tiny holes. I went out and bought a pump, but I don't think I can get the fluid in the hole still. This is what I bought.