I have to add about a gallon a week.

Good morning,

No, it is not. The additive does not fix anything at all. All it does is clog up the radiator and the heater core tubes causing circulation issues.

https://www.2carpros.com/articles/car-is-leaking-coolant

https://www.2carpros.com/articles/coolant-flush-and-refill-all-cars

It is better to pressure test the system and repair the actual leak.

https://www.2carpros.com/articles/radiator-pressure-test

Roy

Thanks for the reassurance that was my thought but wanted a second.

You are welcome.

Always glad to help.

Roy