Noticed this yellow stuff under the oil fill cap. Should I be concerned? (2007 Subaru Outback xt) : r/AskMechanics
yellow sludge material on motor oil cap | BimmerFest BMW Forum
WHY THERE IS YELLOW OIL SLUDGE BUILDUP ON OIL CAP demonstrated on DODGE CHARGER - YouTube
Orange/yellow Sludge in Oil Fill Stem and Cap | Tacoma World
Does anyone know what this yellow stuff is on my oil cap? And is it a bad thing? : r/MechanicAdvice
White Stuff Under the Oil Cap: Causes, Fixes & More | dubizzle
WHY TAN YELLOW SLUDGE PUDDING BUILD UP ON OIL CAP - YouTube
What's this yellow grease under the oil filler cap? - Toyota Prado How To's, Technical Information & Reviews
Yellow sludge oil cap ?? | ClioSport.net
What would you do? | Chevy Colorado & GMC Canyon
Yello sludge on oil cap | E46 Fanatics Forum
Milky, Frothy Engine Oil: Should I Worry? :: YummyMummyClub.ca
Yellow Sludge under Oil Cap? 2010 Forester XT 15k mi - NASIOC
yellow gunky stuff around oil cap - PeachParts Mercedes-Benz Forum
Yellow sludge on oil cap and fill tube - Ford Truck Enthusiasts Forums
Questions about the common yellow sludge/mayo in engine | Vauxhall Corsa-C Forum
What's this yellow stuff on my oil cap? 2002 VW Golf : r/AskAMechanic
Yellow oil cap... - Technical help (E46) - E46Zone
Found yellow sludge around engine oil cap, engine oil dip stick looks normal, as well as gas cap, should I be concerned? P.S. the car is experiencing high gas mileage : r/MechanicAdvice
