I need to know what gear oil and how much the 5 speed transmission takes. on 1992 Chevrolet 1500 Pickup

I just need to know what weight gear oil.

Asked by for the 1992 Chevrolet 1500 Pickup
GM used 4 different manual transmissions that year. They call for either a standadard GL 4 gear oil or Synchro-Mesh Trans Fluid T2850. The T2850 you would have to buy at dealer most likely.
Best call a gm dealer and give the you VIN # so you can tell what transmission you have.