3.4L has a difficult to see drip while running from above the oil filter. I would say it seemed to have started suddenly in Winter. I dont suspect the oil pan seal but it could just as well be. I cant get a good enough look in there. Could it be the oil filter holder itself up against the engine block? Is there anything else up that way which could be culprit? Small hose to oil filter holder looks fine. I suspect I'll just have to drop the pan to see what I can see.

Thoughts?

is it different than a 3400 monte? i dont think the pan goes up that high. you are probably looking at valve covers or the filter mount. not sure about where the pressure sensor is either

On the 3800 that is where the oil pressure sending switch is ... a common source of leaks. Take a look and see where yours is.

on all my wbodies the 60deg engine has the filter in the most inconvenient place possible and it nearly impossible to change without getting oil everywhere. unlike the 3800 that is nice. its about half way up between the rad and engine