snobdds

You need to, once a week at least, get a good heat sink on the engine and work the turbos. It will go away.

My 350K mile Land Cruiser does the same thing in the winter. Never a problem.

byoungblood

That's what you're probably going to find under the filler cap of any vehicle driven under those conditions. I remember reading a thread on JeepForum.com where someone found the same on the oil cap of their TJ.

A few good long drives should clear most of it out, otherwise just change the oil more often.

angel2167882

Quick update here, after 2 months now @ 10000 Km I checked again my oil cap to see this



Have done absolutly nothing, same oil, same driving habit, close range commuting on weekdays.

So, it looks like other have said, it cleaned up by itself.

Temperature here is now hotter, finally spring as come... ~10C to 25C range.

And we went to our first camping trip last week-end so a nice trip of 150 Km with 8000 Lbs towing that helped "engine" to clean itself.

So, I guess a catch can "would" help mostly in winter but still the engine would auto-clean itself at some point during longer/harder trip.

snobdds

Glad you came back and updated the thread.

Looks completely normal to me...

dsg2003mach1

that yellow stuff was definitely from not having enough time at operating temp to burn everything off...as mentioned above Ive seen 4.6 and 5.4 motors with the same stuff, glad you dont have something wrong!