The Tacoma with 1GRFE V6 engine uses Toyota's long life coolant. Recommended replacement schedule is first at 100K miles then subsequent changes at 60K miles.
At the rate I'm driving the coolant will be over 10 years old by 100K miles.
From what I've read on this forum, I get the impression that coolant life is age-bound rather than mile-bound because of the continuous nature of chemical oxidation.
What is your thought? Should I change it earlier? For what it's worth the engine has an aluminum block and cast iron cylinder sleeves, so there is the potential for redox couples.
At the rate I'm driving the coolant will be over 10 years old by 100K miles.
From what I've read on this forum, I get the impression that coolant life is age-bound rather than mile-bound because of the continuous nature of chemical oxidation.
What is your thought? Should I change it earlier? For what it's worth the engine has an aluminum block and cast iron cylinder sleeves, so there is the potential for redox couples.
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