Depends how much money do you want to spend,you can go to autozone.com and enter your vehicles info and enter battery and the batteries they sell for your 90 model will appear.they also have repair guides you can use,just become a autozone member and you can use there guides,it so cool...
A duralast gold from walmart,640 cold cranking amps(800 cranking amps)
no 84 and 85 change out.
80w90 gl4
use ngk spark plugs
75W90
The harmonic balancer from an '88 Nissan pickup may not be compatible with an '87 Nissan pickup, even if both are 4-cylinder models. Differences in engine design, mounting points, or timing alignment could affect fit and functionality. It's best to check the part numbers and consult with a mechanic or parts specialist to ensure compatibility before making a swap.
3.5 qts. with filter
80W-90 Use any brand you like
I have a 1990 and use 10w30
Use a test light as always, you can find one at Canadian tire, connect it to ground first tho then use the light by touching the terminals on a fuse
Take the old dead battery out and look closely at it. The Type is written on the battery.
Electrically there is no reason why not .