S4 oil leaking ..... again

[mchou83]

smell some burning, saw some white smoke
and, again,,.,. it's leaking somewhere in the oil system

[Buhgaboo]

UV dye....if your at a total loss for it's origin...think Auto zone has a rental kit

[ducpainter]

Another method is to thoroughly clean the area, and when dry, spray with aerosol foot powder. The source of the leak will become apparent.

Just a guess, but I'd check the oil filter for tightness.

[Howie]

Also remove the belt cover and look for signs of leaking, after thorough cleaning of course.

[stopintime]

If the rubber hose is the one from the air filter box, and it has oil on it, it could be from there. Stuffed crank case breather catch box - blows oil into air filter box instead of it dripping back down into the engine.... and/or damaged piston/-rings which add to the crank case pressure.

[Duck-Stew]

Another method is to thoroughly clean the area, and when dry, spray with aerosol foot powder. The source of the leak will become apparent.

Just a guess, but I'd check the oil filter for tightness.

Years ago, Ducati changed the hardness of the oil filter seal from medium to hard.  I saw the same filter leak (also my guess BTW) many times until I figured out what was going on.