Fluid · Coolant
Coolant
for 1985-1987 Buick Somerset 2.5L I4 · FWD
Fluid Type
Ethylene glycol 50/50 orange
Spec: GM 6277M or DEX-COOL
Capacity
9qt
8.51 L
Drain & Refill
7.5 qt
7.09 L
Change Interval
30,000 mi
48,270 km
Data quality
Calibrated
Platform-calibrated book-style value. Verification program ongoing.
Notes
Mid-80s may have transitioned to early long-life coolant or still use conventional green
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