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Gary45
May 11, 2022Explorer
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwix2-f-vtj3AhUjAp0JHedMBGwQFnoECDQQAw&url=https%3A%2F%2Fwww.thorforums.com%2Fforums%2Ff8%2Fwhy-cummins-onan-does-not-recommend-synthetic-oil-23430.html&usg=AOvVaw2CtbD3ncBwae5MIazeZiCG
Link to Cummins Onan re oil
Link to Cummins Onan re oil
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