B4000 SE Cab Plus 4WD V6-4.0L OHV (1997)
Fluid - Differential: Fluid Type Specifications
FRONT AND REAR AXLE
Specified Grade .......................................................................................................................................................................................... API service GL-5
Specified Viscosities at Ambient Temperature Ranges:
Temperatures below -18°C (0°F) ........................................................................................................................................................................... SAE 80W
Temperatures above -18°C (0°F) ............................................................................................................................................................................... SAE 90