2 weeks ago Fred suggested that I use GM sealer tabs (which are made for sealing porous aluminum engines) on my '01 Chebby 3/4 ton van. It had a leaking intake manifold gasket. I put them in and have not leaked a drop of water since! It has been up to 105 here in Phoenix lately and I have towed the trailer with equipment 2 or 3 times and a car once, and it is staying sealed for now! I did not want to use something which would clog the radiator, etc.
Thanks Fred!!! Joe Varley AZ
