Help!  I just went to check the coolant level in the expansion tank of my
'87 GL and saw a dark sludge-like substance on top of the coolant.  The
finger-in -the -liquid test confirmed that it is engine oil.  I am hoping
that someone will tell me that this is a problem with the water pump and
nothing greater!  Just prior to this I was telling myself how great the
engine was running.  I had just set the timing and it was purring, actually
almost silent, at 950 rpm.  Your opinion will be appreciated.