Does Coolant Have a Shelf Life

Does Engine Coolant Expire? Yes, coolant has a shelf life and can degrade over time, even if it’s unused. Most antifreeze and coolant products last 3–5 years when stored properly, but some extended-life coolants may last up to 10 years. How Long Does Coolant Last? Signs That Coolant Has Gone Bad ✅ Discoloration or Cloudiness…