When I was doing OEM cooling system stuff a few years back, they were using stopleak tablets at the factory.
That's right, not a half azz way to seal it. Just as long as the right plugs were installed properly you are major wasting your time taking them in and out. That is crazy...use the sealer and it is not snake oil. And will seal them up forever like I said before. Been there done it many times.
If you don't like Barrs leak, then use K Seal. Both of which I have used many times on big trucks that work real hard day after day for years. They are used very differently though, read the directions on both. I have installed cooling parts where the directions instruct you use sealer after the install.
