Fluid · Coolant
Coolant
for 1966 GMC K1500 292ci I6 · 4WD
Fluid Type
Ethylene glycol 50/50 conventional green
Spec: GM 1899-M or ASTM D3306
Capacity
17qt
16.08 L
Drain & Refill
14 qt
13.24 L
Change Interval
30,000 mi
48,270 km
Data quality
Book-style estimate
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Notes
292 inline-6 engine with heater. Larger displacement than 250. Block and radiator drain.