Foam NOT a problem?
I just joined the forum to research a problem with my son's '98 F-150 (4.6 w/63k miles) and stumbled on this thread.
When he changed his oil a couple of weeks ago, everything was fine, except for foam in the oil fill tube. Not much, just a "finger full". His truck is always outside (my Excursion gets the garage because it's bigger...). Before he moved out (yes, there IS a God!), he didn't have the problem. I'm guessing that because he only lives about a mile from work, he's not getting the valve cover hot enough to get all the condensation out? Before, his commute was 30 miles.
Regardless, it sounds like this is NOT a problem? Just wanted to make sure. There are no other problems. Oil's good, engine runs like a dream. Just this foam.