I have been working on rebuilding the top end of my 1.9 since last June
(on and off obviously).  Because of the length of time the motor has
been open, I decided to try and clean any dust that may have got in
there by spraying the inside of the case with kerosene as per the Muire
How to Keep your VW Alive Idiot Book.  Some hard, brittle, black chunks
came out of the oil drain hole (case sealant? valve cover gasket
sealant?), and a few black silicone bits. Is this stuff "normal" to be
in the sump of a 150K motor? Should I be "anal" about trying to get
every last piece out? I already used about 3 litters of kerosene and I
think I got most of it out but I'm sure there are still some bits in
there. My motor ran fine before I took it apart. Thanks

 

Pascal

'84 Westy