Catch Can amounts

[SS/GN]

Did a search but no luck guys. To those that have catch cans what are you seeing for volume and in what timeline?? Doing a little project on a non Buick and was curious to what is normal in our cars.
Thanks in advance.

 

[captndave737]

Before I rebuilt my engine with 210k on it I'd see quite a bit maybe 3 oz.or more in the one going to the valve covers every couple of hundred miles and maybe half that on the one going to the PCV. Now after a several thousand miles of driving I have only about an ounce from the valve covers and a drop or two from the PCV. I guess it depends how much blow by you have.