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Lower transmission line leak at radiator bolt: trick to tighten and seal?

5236 Views 7 Replies 6 Participants Last post by  khomer2
I replaced repaired radiator into 1998 C280. Tightened upper Transmission line Banjo Bolt with no issues. No leaking under pressure. Since the line going into the lower radiator transmission cooler port is a flared fitting, I've tightened it up as tight as it can go, but I'm still experiencing a tiny drip, when she's under pressure. Is there a trick to tightening it to prevent a leakage?
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I was told one time by a company that makes stainless steel brake line kits, that the trick to getting them to seal is to tighten it up, loosen it, tighten it again, back and forth, until the end forms itself to the fitting. This transmission line I think would be very similar, and it would be worth a try. But it sounds like you have it sealed for the moment, so my advice would be don't fix what isn't broke.
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