a general question about a small issue I have come by after replacing the Dexcool in my Saturn with fresh fluid. Drained the block as part of the procedure....a fairly high torqued 10mm, 1 inch long bolt for the block drain with a big washer that threads into the bottom of the T-stat housing. If was on there pretty good...broke it loose and then reinstalled it after draining the block. Now after driving the car for a while after system pressure builds, I pull it into the garage and overnight I get a quarter size puddle...very small...from the block drain plug. I resisted really cranking on this small bolt as it is threaded into aluminum...but it was on real tight to begin with. Would I be well advised to put a little RTV on the threads or on the sealing size of the washer under the bolt head and then retighten the bolt to stop this small weep/leakage?
Thank for any advice,
George