Hi Mat, Thanks for your reply. Believe it or not I have been monitoring this "Nipple" on to top of my Radiator tank for the last few weeks. Occasionally I would notice a very small drop (Almost invisible) forming on top of it, I would wipe it off with my hand, but a few Hrs later it may form again. When I say a small drop I do mean it literarily. It was the size of the period at the end of this sentence.

I did not think that such a drop, especially since its not always there can cause me to loose 4 Oz. of antifreeze in 800-Miles, but I did not want to take a chance and sealed the whole area with J-B-Weld.

Based on your comment however, I would like to now change that Nipple. Where did you get it and how do you change this thing.I hope I can still change it inspite of the J-B-Weld that I applied all around it.

Thanks

Phil

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'95 E300 Diesel, 264,000 Miles. [Sold it]