Ethylene glycol-based 50/50 mix or plain water with rust inhibitor
Capacity
17qt
16.08 L
Drain & Refill
16 qt
15.14 L
Change Interval
24,000 mi
38,616 km
Data quality
Calibrated
Platform-calibrated book-style value. Verification program ongoing.
Notes
Original systems used plain water or light antifreeze. Modern ethylene glycol is acceptable. Large capacity cooling system typical of period flathead engines
The 1955 Plymouth Plaza repair data is incomplete because no one has sponsored it yet. For $99, we generate the full step-by-step procedures, then fact-check them with a second AI pass and your expert review. Your name on every procedure, permanently.
The same data would cost $169/mo from Mitchell1 or $30/year from ALLDATAdiy — and you'd be renting access, not freeing it. Sponsor once, free forever.