White Residue on Belly of Piper Dakota

[egec]

I've experienced cleaning off oil residue on the belly of my Dakota, but I've noticed that the current residue has a white color, which I haven't seen before (see photo attached).

My guess is that I've been running too rich, but I thought I've recently been a lot better about leaning on the ground and in the air. The engine is running fine and all temperatures and gauges are fine. Any thoughts would be much appreciated.

Thanks!

 

[GM.]

 

[sgavette]

 

[kju1pitt]

 

[rwyerosk]

 

[sccpc]

 

[rwyerosk]

 

[ikaros61]

 

[kwguy]

 

[John700]