Fluid · Coolant
Coolant
for 1990 Pontiac Grand Prix 3.1L V6 · FWD
Fluid Type
DEX-COOL orange 50/50
Spec: GM 6277M or equivalent
Capacity
12.6qt
11.92 L
Drain & Refill
12.6 qt
11.92 L
Change Interval
150,000 mi
241,350 km
Notes
GM transitioned to DEX-COOL in 1995-1996, but 1990 likely used conventional green coolant (ethylene glycol). If green, use 30000 mile interval.
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