hidden oil leak ?'s

[eurorocco at hotmail.com (Dave M)]

hey everyone,  i've got an oil leak i can't seem to find.  i think it's 
coming form the oil cooler flange, but i'm not sure.  it's leaking right 
down the front of the engine, and dripping from around the front engine 
mount.  i pulled the oil cooler off and replaced the ruuber o-ring, and also 
replace the high pressure switch and oil temp sender that are mounted on top 
of the oil cooler flange, but that didn't seem to do me any good.  i also 
tried to remove the flange from the block, but i wouldn't budge.  i had all 
three allen head bolts out, and it feels like there's still something 
holding it on there.  everything above the oil cooler is dry, but below that 
it's covered in oil and looks like crap.  any idea's what it might be?  oh 
yeah, it's a '87 16v.

thanks

Dave m.