K 2500 Truck 4WD V8-454 7.4L VIN J SFI (1997)
Fluid - Differential: Fluid Type Specifications
Front Axle
Type ....................................................................................................................................................................................................... SAE 80-W-90 GL-5
Locking Differential
SAE 75-W-140 Synthetic
Rear Axle
Axle Lubricant ................................................................................................................................................................................................. 80W-90 GL-5