Fluid · Transfer Case
Transfer Case
for 1966 GMC K1500 305 cu in (5.0L) GMC V6 · 4WD
Fluid Type
80W-90 GL-5 or Dexron II ATF
Spec: API GL-5 or Dexron II
Capacity
4qt
3.78 L
Drain & Refill
4 qt
3.78 L
Change Interval
30,000 mi
48,270 km
Data quality
Book-style estimate
Not yet expert-verified. Have the real number? Correct it below — takes 30 seconds.
Notes
NP205 part-time transfer case. Some used gear oil, others ATF per GM spec.