...So I washed the Carc with hot soapy water, cleaning it down GOOD, and took a nice brisk ride to generate some heat in the drive train... and, very slight weepage, almost nothing really, no discoloration, and (my main concern that it was emanating from the forward, engine end of the business-NOPE), so, minor weepage at the joint? I'm not gonna give it worry...But I wanna thank everyone who piped in....and, fired her up last nite about 10 PM, 40 F, and man does this Stelvio LOVE this cold weather!....Thanks again, all....GDP