July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Fluid - Differential

Differential Fluid Type

Grade
181 FBI, 194 RBI, 216 RBI API GL-5
181 FBI, 194 RBI, 216 RBI (heavy duty or trailer tow use) Synthetic

Viscosity
181 FBI, 194 RBI, 216 RBI 80W-90
181 FBI, 194 RBI, 216 RBI (heavy duty or trailer tow use) 75W-140