Review on 🛢️ ACDelco GM OE 10-4017 Auto-Trak II Transfer Case Fluid - 33.8 oz by Dino Wilson

In a GM 4x4 like my 1999 Tahoe, blue fluid gets into the friction transfer case. I bought 3 liters and drained what spilled from the drain hole within an hour. I was only able to return 2 liters so you may only need 2. Good price so don't mind having a spare liter. This is now the color code for my liquids. Blue = Transfer Case, Red = Transmission, Green = Antifreeze, Yellow = Engine Oil, Clear = Power Steering Oil.