How do you lubricate your manual gear box in a Ford Fusion 1?

You don't lubricate a Ford Fusion 1's manual gearbox yourself. Manual transmission fluid is a sealed system and requires professional servicing. There's no user-accessible fill or drain plug to add lubricant. Attempting to do so yourself could cause damage to the transmission and void any warranty.

Instead of trying to lubricate it yourself, take your Ford Fusion to a qualified mechanic or Ford dealership for a manual transmission fluid change. They have the specialized tools and knowledge to properly service the transmission. They'll drain the old fluid and replace it with the correct type and quantity of fluid specified for your vehicle's year and model. This is a scheduled maintenance item and should be done at the intervals specified in your owner's manual.