Hammer Posted April 10, 2021 Share Posted April 10, 2021 On a 2017 Mack GU713 with the MP7 engine, there is an oil return line going into the oil pan behind the oil filters. What's this line called and is there a gasket or O-ring where it connects to the pan? I have a steady drip coming from this line where it goes into the pan. Quote Link to comment Share on other sites More sharing options...
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