coolant efficiency

  1. marksky57
    Thread

    Normal Coolant Temps for Gen 3 Prius on Long Uphill Climbs?

    2010 Prius, 260k miles. Coolant temp reaches about 209°F on flat highway driving in Arizona summer heat. Recently repaired a P261C electric water...
    Thread by: marksky57, Aug 14, 2026 at 1:29 AM, 0 replies, in forum: Gen 3 Prius Care, Maintenance & Troubleshooting
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