What type oil or fluid do you use in 94 Chevy 1500 front differential?

A 1994 Chevy 1500 front differential typically uses 80W-90 gear oil. However, it's crucial to check your owner's manual to confirm the specific recommended oil type and quantity for your truck. The manual will specify if a specific type of 80W-90 (e.g., synthetic, conventional) is preferred. Using the wrong type of fluid can damage your differential.