Related: How to Check Your Car’s Engine Coolant ... putting in fresh coolant used to be a regular maintenance item, but many current vehicles can go 100,000 miles before a flush is needed ...

For those not in the know, engine coolant's primary function is to prevent your engine from overheating. If the coolant is too hot, your engine is far more vulnerable to a catastrophic failure.

There are, however, no guarantees that such an engine issue won't befall you even if you are changing your coolant as often ...