Fluid · Coolant
Coolant
for 1966 GMC C2500 305 cu in (5.0L) GMC V6 · RWD
Fluid Type
Ethylene glycol 50/50 green
Spec: Conventional inorganic additive
Capacity
15qt
14.19 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
292 inline 6 cooling system. Use conventional green coolant for older engines.