Saturn Ion (USA / CAN)

Coolant capacity & service interval

Saturn Ion (USA / CAN) coolant capacity ranges from 6,5 to 7,5 liters. Service intervals include checking every 12 months and changing every 240000 km or 60 months. The data covers 5 configurations.

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

TypeSpecifications
Ion 2.2 16V (2007-2007)
  • Use: Normal
  • Capacity 6,5-7,5 liter
  • Check 12 months
  • Change 240000 km/ 60 months
Ion 2.4 16V (2007-2007)
  • Use: Normal
  • Capacity 6,8-7,5 liter
  • Check 12 months
  • Change 240000 km/ 60 months
Ion 2.4 16V (2005-2006)
  • Use: Normal
  • Capacity 6,8-7,5 liter
  • Check 12 months
  • Change 240000 km/ 60 months
Ion 2.0 16V Supercharged (2003-2007)
  • Use: Normal
  • Capacity 7,5 liter
  • Check 12 months
  • Change 240000 km/ 60 months
Ion 2.2 16V (2003-2006)
  • Use: Normal
  • Capacity 6,5-7,5 liter
  • Check 12 months
  • Change 240000 km/ 60 months

Additional Notes

  • The Saturn Ion 2.0 16V Supercharged carries a fixed cooling system capacity of 7.5 liters across its full 2003-2007 production span, reflecting the additional thermal load a forced-induction engine places on the cooling circuit compared to naturally aspirated variants of similar displacement.
  • The 2.2 16V engine lists a capacity range of 6.5-7.5 liters rather than a single fixed value, a spread that typically accounts for variation introduced during refilling depending on air pocket purging and whether the system is drained partially or fully.
  • The 2.4 16V engine, available from 2005, carries a slightly narrower capacity range of 6.8-7.5 liters, placing its lower bound above that of the 2.2 16V, which aligns with the larger displacement requiring a marginally greater minimum coolant volume to maintain adequate thermal management.
  • All five configurations share an identical change interval of 240,000 km or 60 months under normal use conditions, meaning the mileage and time limits apply concurrently and whichever threshold is reached first would govern the service event.
  • The 60-month change interval translates to a five-year cycle, which is consistent with long-life coolant formulations that use organic acid technology or similar extended-service chemistry capable of maintaining corrosion inhibitor effectiveness over that duration.
  • A separate 12-month check interval is specified across all configurations regardless of engine type, indicating that coolant condition and level are to be inspected annually well ahead of the full change interval.
  • The 2.2 16V specifications are split across two row entries covering 2003-2006 and 2007 respectively, yet both entries carry identical capacity ranges and service intervals, meaning no specification change was introduced for the 2007 model year on that engine.
  • The same pattern applies to the 2.4 16V, where the 2005-2006 and 2007 entries share identical capacity ranges and intervals, indicating continuity in cooling system specifications across those model years for that engine.

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