I've currently have 2009 ford expedition eddie bauer I've noticed a bit of white smoked coming out the exhaust pipe after a bit of time it goes away took it to the mechanic an he agrees its pcv valve now here's my problem upon researching an going to several part stores an calling the ford service parts provider it turns out they don't make them no more and theres no after marketparts if try ebay also and no luck , ive been thinking about it an have consider if looking at the junk yard for a pcv valve would be an alternative or does anyone know or have an idea on how to modify It so far no dash light but I've read it carn harm the engine long term