Replacing green coolant with Toyota red.
#61
Registered User
Your joking right? The ratio effects the freezing point as well as the boiling point. Running straight water will boil at 210f- 100c. If that happens you'll probally start blowing hoses from a huge pressure increase. The coolant also acts as a lubricant for the water pump. If you run straight water your water pump bearings won't like it. Ever think about corrosion? Corrosion inhibitors are in your coolant as well. Have fun cleaning your rusty block.
I do change my coolant every year though, the corrosion inhibitors are still there with 25% coolant, they just don't last as long. Running tap water is going to cause way more corosion and electrolysis problems.
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