Quote Originally Posted by HWORRELL View Post
Bar's leak tablets manufacturer part # 87066 Napa's part # NDC. I understand that G.M.puts a tablet in each side of the block before the freeze plugs go in ?
In any case any cooling system service we do gets 2 tablets. Never had problems with clogged heater cores or such from using them.
That's good info to have for the future. I've used Bar's Leaks "goop" in the bottle, the brown liquid that has a handful of rabbit pellets in the bottom, but it seems like too much at one time to me. Pills sound like a good approach. Thanks.