Lexus GS, S140 (USA / CAN)

Coolant capacity & service interval

Lexus GS, S140 (USA / CAN) coolant capacity is 7,5 liters. Service intervals include 30000 miles/ 24 months and 45000 miles/ 36 months. The data covers 7 configurations.

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

TypeSpecifications
GS 300 (USA) (1996-1997)
  • Use: Normal
  • Capacity 7,5 liter
GS 300 (USA) (1995-1995)
  • Use: Normal
  • Capacity 7,5 liter
  • Change 30000 miles/ 24 months
GS 300 (USA) (1995-1995)
  • Use: First change only
  • Capacity 7,5 liter
  • Change 45000 miles/ 36 months
GS 300 (USA) (1994-1994)
  • Use: Normal
  • Capacity 7,5 liter
  • Change 30000 miles/ 24 months
GS 300 (USA) (1994-1994)
  • Use: First change only
  • Capacity 7,5 liter
  • Change 45000 miles/ 36 months
GS 300 (USA) (1993-1993)
  • Use: Normal
  • Capacity 7,5 liter
  • Change 30000 miles/ 24 months
GS 300 (USA) (1993-1993)
  • Use: First change only
  • Capacity 7,5 liter
  • Change 45000 miles/ 36 months

Additional Notes

  • The Lexus GS 300 (USA) S140 cooling system holds 7.5 liters across all model years from 1993-1997, a capacity consistent with a full cooling system service fill rather than a partial top-off or drain-and-fill procedure.
  • For the 1993-1995 GS 300 (USA), the normal use condition ties a coolant change interval to 30,000 miles or 24 months, whichever comes first.
  • A separate first change only interval of 45,000 miles or 36 months applies to the 1993-1995 GS 300 (USA), meaning the initial factory coolant fill was rated for a longer service life before the standard recurring interval took over.
  • The extended first change only interval of 45,000 miles or 36 months reflects a common industry practice where fresh factory coolant retains its inhibitor package longer than coolant that has already undergone one heat cycle and partial degradation.
  • The 1996-1997 GS 300 (USA) specifications list only the 7.5-liter capacity without an associated change interval, distinguishing the data available for those model years from the 1993-1995 entries.

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