pcv on nissan
 

On my 1990 300zx they had to be cleaned and changed every so often. the maintenance does not mention them at all. did they finally improve them. So far I am impressed with this car. there is low maintenance.

its not given an interval basically replace if you suspect failure. I used to have a 300zx too and they were screwed in under the manifold and took hours to change where as on the 370 they are easily accesed on the top of the valve covers. failure is uncommon