![What could this yellow gunk be? Found on inside of oil cap of 2018 Buick Encore with just 11,000km/7,000 miles. I changed the oil when the car was brand new with fully What could this yellow gunk be? Found on inside of oil cap of 2018 Buick Encore with just 11,000km/7,000 miles. I changed the oil when the car was brand new with fully](https://preview.redd.it/0hkgfintob341.jpg?width=640&crop=smart&auto=webp&s=ac729c83eb2f804d70136078eb42753c79ce55e3)
What could this yellow gunk be? Found on inside of oil cap of 2018 Buick Encore with just 11,000km/7,000 miles. I changed the oil when the car was brand new with fully
![Noticed this yellow stuff under the oil fill cap. Should I be concerned? (2007 Subaru Outback xt) : r/AskMechanics Noticed this yellow stuff under the oil fill cap. Should I be concerned? (2007 Subaru Outback xt) : r/AskMechanics](https://i.redd.it/mo9r656w1pm41.jpg)
Noticed this yellow stuff under the oil fill cap. Should I be concerned? (2007 Subaru Outback xt) : r/AskMechanics
![f 150 - What's this yellow paste I found when I attempted to add oil? - Motor Vehicle Maintenance & Repair Stack Exchange f 150 - What's this yellow paste I found when I attempted to add oil? - Motor Vehicle Maintenance & Repair Stack Exchange](https://i.stack.imgur.com/eCLMb.jpg)
f 150 - What's this yellow paste I found when I attempted to add oil? - Motor Vehicle Maintenance & Repair Stack Exchange
![Yellow gunk under oil cap — Ricks Free Auto Repair Advice Ricks Free Auto Repair Advice | Automotive Repair Tips and How-To Yellow gunk under oil cap — Ricks Free Auto Repair Advice Ricks Free Auto Repair Advice | Automotive Repair Tips and How-To](https://ricksfreeautorepairadvice.com/wp-content/uploads/2018/04/oil-cap.jpg)