Checked fluid levels and noticed antifreeze level down,
(approx. half quart ) noticed it in bilge. I refilled it and seen
a small amount of oil film floating on the antifreeze.
Checked hoses and heat exchanger and dont see any
leaks so far, need some imput for this problem . Thanks.

look up raylar post,,,,he was just talking about that

See my previous post on 496 engines leaking from heat excahnger rubber bushing gaskets at bottom of heat exchanger where it plugs intot the crossover manifold.

Best Regards,
Ray @ Raylar

Would that cause a small amount of oil to
apear in tank when refilled ?