Oldsmobile Eighty Eight (USA / CAN)

Coolant capacity & service interval

Oldsmobile Eighty Eight (USA / CAN) requires coolant with a capacity of 12,3 liters. Service intervals for the fluid are 150000 miles or 60 months. The data covers 1 configuration.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
Eighty Eight 3.8 (1999-1999)
  • Use: Normal
  • Capacity 12,3 liter
  • Change 150000 miles/ 60 months

Additional Notes

  • The Oldsmobile Eighty Eight 3.8 carries a coolant system capacity of 12.3 liters, a figure consistent with a full cooling system service fill that accounts for the radiator, engine block passages, heater core, and associated hoses rather than a partial drain-and-refill volume.
  • The 150,000-mile change interval for the 1999 Eighty Eight 3.8 reflects an extended-life coolant specification, as conventional coolant formulations of that era typically required replacement at far shorter intervals, often around 30,000 miles.
  • The 60-month interval running alongside the 150,000-mile mileage figure means coolant replacement is due at whichever threshold arrives first, placing a five-year calendar ceiling on service regardless of accumulated mileage.
  • The interval is designated for normal use conditions, meaning the 150,000-mile and 60-month figures apply to standard operating environments rather than severe-duty cycles such as frequent towing, extreme temperature exposure, or stop-and-go fleet operation.

Other Systems