Kia Optima, MG (USA / CAN)

Brake fluid capacity & service interval

Kia Optima and MG (USA / CAN) models require brake fluid with a capacity range of 0,7 to 0,9 liters. Service intervals include checks at 3000 miles or 3 months, 7500 miles or 6 months, and 15000 miles or 12 months. The data covers 7 configurations.

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

TypeSpecifications
Optima 2.4 DOHC (USA) (2008-2010)
  • Use: Normal
  • Capacity 0,9 liter
  • Check 15000 miles/ 12 months
Optima 2.4 DOHC (USA) (2008-2010)
  • Use: First check only
  • Capacity 0,9 liter
  • Check 7500 miles/ 6 months
Optima 2.7 V6 (USA) (2008-2010)
  • Use: Normal
  • Capacity 0,9 liter
  • Check 7500 miles/ 6 months
Optima 2.4 DOHC (USA) (2006-2008)
  • Use: Normal
  • Capacity 0,7-0,8 liter
  • Check 15000 miles/ 12 months
Optima 2.4 DOHC (USA) (2006-2008)
  • Use: Severe
  • Capacity 0,7-0,8 liter
  • Check 3000 miles/ 3 months
Optima 2.7 V6 (USA) (2006-2008)
  • Use: Normal
  • Capacity 0,7-0,8 liter
  • Check 15000 miles/ 12 months
Optima 2.7 V6 (USA) (2006-2008)
  • Use: Severe
  • Capacity 0,7-0,8 liter
  • Check 3000 miles/ 3 months

Additional Notes

  • The Kia Optima 2.4 DOHC (USA) for 2006-2008 carries a brake fluid capacity of 0.7-0.8 liter in the hydraulic brake/clutch system, expressed as a range rather than a fixed value, which reflects acceptable fill variation within the reservoir.
  • For the same 2006-2008 2.4 DOHC configuration, the normal use condition calls for a fluid check at 15,000 miles or 12 months, while the severe use condition shortens that interval significantly to 3,000 miles or 3 months.
  • The 2.7 V6 (USA) for 2006-2008 shares the same 0.7-0.8 liter capacity range and the same dual-interval structure as the 2.4 DOHC of the same years, with normal use at 15,000 miles/12 months and severe use at 3,000 miles/3 months.
  • Moving into the 2008-2010 model years, the 2.4 DOHC (USA) shows a capacity increase to a fixed 0.9 liter, a departure from the ranged value used in the earlier generation of the same engine.
  • The 2008-2010 2.4 DOHC (USA) introduces a first check only interval of 7,500 miles or 6 months alongside the standard normal use check at 15,000 miles or 12 months, indicating an earlier inspection is specified for the initial service period.
  • The 2008-2010 2.7 V6 (USA) also carries a 0.9 liter capacity, consistent with the updated 2.4 DOHC of the same period, and its normal use check interval is set at 7,500 miles or 6 months rather than the 15,000 miles/12 months seen in the 2006-2008 V6.
  • Across both engine configurations in the 2006-2008 period, the severe use check interval of 3,000 miles or 3 months represents a fivefold increase in inspection frequency compared to the normal use interval of 15,000 miles or 12 months.

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