Toyota Avalon, XX20 (USA / CAN)

Coolant capacity & service interval

Toyota Avalon, XX20 (USA / CAN) uses coolant with a capacity of 9 liters. Service intervals include checks at 8000 km/6 months or 15000 miles/18 months and changes at 32000 km/24 months, 64000 km/48 months, 128000 km/96 months, 30000 miles/24 months, 50000 miles/60 months, or 100000 miles/120 months. The data covers 8 configurations.

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

TypeSpecifications
Avalon 3.0 V6 (CAN), MCX20 (2004-2004)
  • Use: Normal
  • Capacity 9 liter
  • Check 8000 km/ 6 months
  • Change 64000 km/ 48 months
Avalon 3.0 V6 (CAN), MCX20 (2004-2004)
  • Use: First change only
  • Capacity 9 liter
  • Check 8000 km/ 6 months
  • Change 128000 km/ 96 months
Avalon 3.0 V6 (USA), MCX20 (2004-2004)
  • Use: Normal
  • Capacity 9 liter
  • Check 15000 miles/ 18 months
  • Change 50000 miles/ 60 months
Avalon 3.0 V6 (USA), MCX20 (2004-2004)
  • Use: First change only
  • Capacity 9 liter
  • Check 15000 miles/ 18 months
  • Change 100000 miles/ 120 months
Avalon 3.0 V6 (CAN), MCX20 (2003-2003)
  • Use: Normal
  • Capacity 9 liter
  • Check 8000 km/ 6 months
  • Change 32000 km/ 24 months
Avalon 3.0 V6 (USA), MCX20 (2003-2003)
  • Use: Normal
  • Capacity 9 liter
  • Change 30000 miles/ 24 months
Avalon 3.0 V6 (CAN), MCX20 (1999-2002)
  • Use: Normal
  • Capacity 9 liter
  • Check 8000 km/ 6 months
  • Change 32000 km/ 24 months
Avalon 3.0 V6 (USA), MCX20 (1999-2002)
  • Use: Normal
  • Capacity 9 liter
  • Change 30000 miles/ 24 months

Additional Notes

  • The Toyota Avalon XX20 3.0 V6 cooling system holds 9 liters across all listed configurations for 1999-2004, a figure consistent with a full system service fill rather than a partial drain-and-refill.
  • Canadian-market MCX20 models from 1999-2002 and 2003 share identical service intervals, with coolant checks scheduled at 8,000 km or 6 months and coolant changes at 32,000 km or 24 months under normal use conditions.
  • The 2004 Canadian-market MCX20 under normal use conditions doubles the change interval to 64,000 km or 48 months compared to the 1999-2003 specification, while retaining the same 8,000 km or 6-month check schedule.
  • A separate first-change-only entry applies to the 2004 Canadian-market MCX20, specifying a change interval of 128,000 km or 96 months. This extended interval reflects the use of long-life coolant formulations, which are designed to remain effective for a single extended service period before reverting to a standard replacement schedule.
  • USA-market MCX20 models from 1999-2002 and 2003 carry a change interval of 30,000 miles or 24 months under normal use, with no separate check interval listed in the specifications.
  • The 2004 USA-market MCX20 under normal use conditions extends the change interval substantially to 50,000 miles or 60 months, and adds a check interval of 15,000 miles or 18 months, neither of which appeared in the 1999-2003 USA entries.
  • The 2004 USA-market MCX20 first-change-only entry specifies a change interval of 100,000 miles or 120 months, which is double the normal-use change interval for the same model year, paralleling the same long-life coolant logic seen in the Canadian specification.
  • Across both markets, the 2004 model year represents a clear shift in coolant service philosophy for the MCX20, with significantly longer change intervals introduced alongside the first-change-only designation that did not appear in any prior year entries.

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