Fluid · Coolant
Coolant
for 1978 GMC K1500 250ci I6 · 4WD
Fluid Type
Ethylene glycol 50/50
Spec: GM 1899-M or equivalent conventional green coolant
Capacity
16qt
15.14 L
Drain & Refill
14 qt
13.24 L
Change Interval
24,000 mi
38,616 km
Data quality
Book-style estimate
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Notes
Includes heater and block. Conventional green coolant with silicate corrosion inhibitors.