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Fleabit peanut monkey
Join Date: Nov 2007
Location: North Canton, Ohio
Posts: 20,864
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Motor flush on oil change requires cold engine?
Motor Medic Motor Flush - 1 qt (Not 911. 2007 Jeep 3.7L)
Add to full crankcase when engine is cold. Idle engine five minutes. Shut off and drain.
I read the directions after I have already warmed up the engine for ten minutes.
I look at the contents and it's #2 diesel fuel and kerosene plus distillates.
I'd rather do it with the oil hot. However, I have no idea why it's supposed to be done when cold.
Thoughts?
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1981 911SC Targa
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