what is the yellow gunk on inside of engine oil fill cover - Toyota 4Runner Forum - Largest 4Runner Forum
![Yellow "gunk" on my oil cap??? | Chevy Tahoe Forum | GMC Yukon Forum | Tahoe Z71 | Cadillac Escalade - Tahoe Yukon Forum Yellow "gunk" on my oil cap??? | Chevy Tahoe Forum | GMC Yukon Forum | Tahoe Z71 | Cadillac Escalade - Tahoe Yukon Forum](https://www.tahoeyukonforum.com/data/attachments/7/7409-235117d46e3896313204bf33a3d764d3.jpg)
Yellow "gunk" on my oil cap??? | Chevy Tahoe Forum | GMC Yukon Forum | Tahoe Z71 | Cadillac Escalade - Tahoe Yukon Forum
What's this yellow grease under the oil filler cap? - Toyota Prado How To's, Technical Information & Reviews
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