Fluid · Coolant
Coolant
for 1991 Buick Roadmaster 5.0L (305 cu in) LO3 V8, 170 hp · RWD
Fluid Type
Dexcool 50/50 orange
Spec: GM 6277M or DEX-COOL
Capacity
14.5qt
13.72 L
Drain & Refill
14.5 qt
13.72 L
Change Interval
100,000 mi
160,900 km
Notes
GM switched to Dexcool in 1995-1996; 1991 likely used green conventional
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