My owners manual indicates 15.9 US gallons.
Your best bet is to buy a owners workshop manual It shows all the steps to remove it and install it.
The weight of the 1991 Nissan pickup truck with the manual transmission is about 3400 pounds. This is called the curb weight.
The fuse box diagram can be found in the owners manual of this car. It can also be found on the fuse box cover in this car.
nasa
owners manual.
nissan matic d for auto trans and 75w90 for manual trans
NO!
Free Nissan Repair Service Manuals - cardiagn.com/category/nissan-repair-service-manuals/
1400 buckaroos
75W90
I asked a mechanic and he said yes as long as both have the same speeds and same cilinders. Hope this helps