Where do you put gear oil 87 suzuki samurai standard transmission?

To add gear oil to a 1987 Suzuki Samurai's standard transmission, locate the fill plug on the transmission case, which is usually on the side. Use a socket wrench to remove the plug, then pour the appropriate gear oil (typically GL-4) into the fill hole until it reaches the bottom of the plug opening. Reinstall the plug securely after filling. Always consult your owner's manual for specific oil specifications and capacities.