Thanks Dtinker. yes I did the reset, and it's possible a hose may not be all the way in, or a gasket leak, but the gasket leak I would expect an issue more than just the time it's cold. Even when I got her out in the spring and it was really cold here this spring, as soon as the engine warmed it was fine. so in the cold air temps I would have expected that to happen a bit longer on the first run of the day, but it didn't. just the first upshift and after that it was fine.