What is best Stop Leak product?

[edweather]

I threw a small tube of Alumaseal in it. Looked like a brown powder. We shall see.

 

[nthach]

My choice is none - but if you're in a pinch, Bar's Leak. Ground ginger and cellulose is a lot more benign than metal powder, polymers or Kevlar fibers floating in your cooling system.

If it was me, I'd throw in a decent aftermarket radiator and call it a day.

 

[Nick1994]

A gallon of antifreeze is around $15. 1 quart every 2 weeks is 6-1/2 gallons of antifreeze per year or $97.50 of antifreeze a year.

6 years of topping off is $585.

Should have replaced that radiator a long time ago.