[olddog]

Heater core is leaking in my 01 Grand Marquis. My Haynes manual list 21 horrible steps of dropping the steering column to rip the entire dash / instruments panel apart. The manual is quite vague like "disconnect two vacuum hoses at the source." Bottom line, I not feeling up to this.

I expect the labor to have it done will be steep. So, I'm considering trying some type of stop leak product. I did this about 35 years ago using some product that had some type of balls. Seems like it was glass beads, but that doesn't make sense, as glass will not melt at engine temps. Anyway I kept that car about 3 years and the heater core never leaked after that.

This is a 11 year old car with 130K miles. I expect I will only keep it another 4 years (until too many things start failing).

Bad idea or worth a try? What product?