Radiator "Pellets"

I just got through doing this on my GMC truck and, as I understand it, you *don't* want to use the bottle or canned Bars Leaks in order to duplicate what GM recommends. You want either the Bars Leaks tablets (in a blister pack) or the Bars Leaks "Golden Seal" powder (which comes in a tube and is basically the tablets in powdered form.) I ended up using the Golden Seal powder, which seems easier to find than the tablets.

You can sort them out at

Bob D. wrote:

Thanks! That is just the info I needed. Appreciate the help.

The GM part # for the tabs is 3634621. A parts store that carries AC-Delco brand will also have the tabs...less than $5

Dave S(Texas)

What are the 'pellets' suppose to do for you?

Well, I suspect if you ate them, it would bind you up pretty good...... The tablets are a required cooling system sealant for Al block/iron head engines. Not using the sealant will cause a massive cash-flow problem from ones' wallet, due to costly engine problems.

Dave S(Texas)

It is my understanding that they are ground up ginger root. It seals small porosities and voids, preventing the antifreeze from getting to, and eating away at, the head gaskets. After initial skepticism followed by some research, I am convinced of their efficacy. I use the BarsLeaks version of the pellets in the four vehicles under my aegis.

"When a legislature undertakes to proscribe the exercise of a citizen's constitutional rights it acts lawlessly and the citizen can take matters into his own hands and proceed on the basis that such a law is no law at all."

- Justice William O. Douglas

Thanks Folks for all the replies. I knew all the people on here were smart! :^)

Bob...