Fluid · Coolant
Coolant
for 1969 Ford Mustang Boss 429 429ci V8 (Boss 429 Semi-Hemi) · RWD
Fluid Type
ethylene glycol 50/50
Spec: conventional green
Capacity
18qt
17.03 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
Larger capacity due to big-block. Standard green coolant period-correct. Modern universal coolant acceptable. Change every 2 years/24k miles.