[CruzeEcoBlueTopaz]

I would like to point out at 100k my original valve cover was leaking air and was replaced. I dont know for certain if this original valve cover was the older design but I imagine it was considering my eco was built 1/12. Now I can say for sure the leaking original valve cover was replaced with a newly designed valve cover which just so happens began to leak air at 180k and was replaced. So basically my original possibly older valve cover design lasted 100k and this most recent newly designed valve cover lasted 80k. ???

 

[CruzeEcoBlueTopaz]

Why would my dealer use sealant instead of a gasket...

 

[CruzeEcoBlueTopaz]

Yeah last time sealant was used I noticed a handful of tiny sesame seed sized white flakes in the oil filter im assuming caused by the use of sealant.

So your saying a gasket comes with the valve cover... next time my valve cover needs to be replaced I will consider doing it myself.