Fluid · Coolant
Coolant
for 1992 GMC Sierra 3500 6.5L V8 Diesel · 4WD
Fluid Type
Conventional green 50/50
Spec: GM 1899M or equivalent ethylene glycol
Capacity
24qt
22.7 L
Drain & Refill
20 qt
18.92 L
Change Interval
30,000 mi
48,270 km
Data quality
Book-style estimate
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Notes
System includes block, radiator, heater core; full drain-flush-refill recommended