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    Do I have to change the oil after I replace the valve cover gasket?

    I have a 2006 Jeep Wrangler with a 4.0 in it that I just bought a month ago. I discovered the valve cover gasket is leaking oil but was wondering if I have to change the oil after I replace the gasket or not is this general practice or not. The guy that I bought it from told me that it has...