Fluid · Coolant
Coolant
for 1974 Pontiac GTO 455ci V8 · RWD
Fluid Type
Ethylene glycol green 50/50
Spec: GM 1899M or equivalent
Capacity
18qt
17.03 L
Drain & Refill
15 qt
14.19 L
Change Interval
24,000 mi
38,616 km
Data quality
Book-style estimate
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Notes
With heater. Larger capacity due to 455ci displacement. Block drain typically leaves 3 quarts in block.