Brown sludge in oil cap | BimmerFest BMW Forum
Yellow gunk on oil cap. | VW Beetle Forum
Yellow gunk in oil AHHHH ......PICS - Volkswagen Forum - VW Forums for Volkwagen enthusiasts
What is the yellow gunk under your oil cap — Ricks Free Auto Repair Advice Ricks Free Auto Repair Advice | Automotive Repair Tips and How-To
Yello sludge on oil cap | E46 Fanatics Forum
Yellow sludge inside oil fill cap normal? | Tacoma World
Weird Sludge/gunk under oil cap? | Tacoma World
what is the yellow gunk on inside of engine oil fill cover - Toyota 4Runner Forum - Largest 4Runner Forum
Yellow sludge on oil cap? | Mercedes-Benz Forum
Yellow "gunk" on my oil cap??? | Chevy Tahoe Forum | GMC Yukon Forum | Tahoe Z71 | Cadillac Escalade - Tahoe Yukon Forum
Does anyone know what this yellow stuff is on my oil cap? And is it a bad thing? : r/MechanicAdvice
Yellow gunk under oil filler cap | ClioSport.net
Strange Yellow Stuff On Oil Cap | BimmerFest BMW Forum
Yellow Sludge under Oil Cap? 2010 Forester XT 15k mi - NASIOC
White Stuff Under the Oil Cap: Causes, Fixes & More | dubizzle
Yellow sludge on oil cap and fill tube - Ford Truck Enthusiasts Forums
What's this yellow stuff on my oil cap? 2002 VW Golf : r/AskAMechanic
Yellow oil cap... - Technical help (E46) - E46Zone
Yellow gunk on oil filler neck - Rennlist - Porsche Discussion Forums
Yellow sludge on oil cap and fill tube - Ford Truck Enthusiasts Forums
WHY THERE IS YELLOW OIL SLUDGE BUILDUP ON OIL CAP demonstrated on DODGE CHARGER - YouTube
Yellow gunk in oil filler cap | Focus RS Forum
Yellow goo on dipstick and oil cap | Audi-Sport.net
Tan / Yellow Sludge Pudding Under Oil Fill Cap | VW Audi 2.0T - YouTube
yellow gunky stuff around oil cap - PeachParts Mercedes-Benz Forum
This gunk under my oil cap means? : r/autorepair
Orange/yellow Sludge in Oil Fill Stem and Cap | Tacoma World
yellow-ish stuff on engine oil cap (BMW) | Overclockers UK Forums
