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Yellow gunk under oil cap — Ricks Free Auto Repair Advice Ricks Free Auto Repair Advice | Automotive Repair Tips and How-To
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Noticed this yellow stuff under the oil fill cap. Should I be concerned? (2007 Subaru Outback xt) : r/AskMechanics
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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
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