Ok, upon further diagnosis I noticed the following.
The car was warmed up, and slight vapor occured at higher revs (no engine load) from the dipstick tube and the oil cap, with both open.
After investigating this for about 5 minutes, we recapped the oil/tube & let it sit running. Fan came on engine cooled. Engine warmed again, we reopened oil/tube. This time, vapor only came out when the fan was engauged!! This was confirmed at various engine temps, letting the fan turn on by itself and enguaging it manually! I have absolutely no explanation for this phenomenon.
After reclosing both oil & dipstick, we shut the car off. Turned it back on a bit later ( 5minutes?) and let it warm back up to half way. Rechecked under the same conditions, and there was NO vapor. Let it run 10 minutes, still no vapor.
Something else; upon heavy throttle/boost quick revving(low gear) under load with the dipstick tube partially removed, there is slight oil emission.
I am installing a Motorcraft PCV later today to eliminate the newer aftermarket unit from Autozone as a possible cause.
I could really use some help here.. lol.
This and the
oil pressure sensor thread; I believe they could be related.