PA 2005 has antifreeze leaking most likely from the gap of the gasket lower intake near the PCV valve. The leak is most visable after driving with traces of antifreeze seen.

Is it possible the antifreeze can enter the engine/oil compartment if repair is delayed? What is the estimated cost?. Is there any additive to seal this leak or replacement of gasket is the only solution?

Pls assist if anyone had similar problem.

If I were you, I would try 1/2 bottle of Bar's Leaks Liquid Aluminum as shown in pic below. It works wonders for small leaks!

http://www.jcwhitney.com/jcwhitney/sku/images/large/I_449706_CL_1.jpg