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I have 2006 duramax with 70,000 miles and the glow plugs went. They got 7 of them out. But number 7 won't come out. Tried spaying it for 3 days. I am afraid of beaking it off. Any suggestions?
 

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Have you tried a 50/50 mix of acetone and transmission fluid? Best rust buster made.
 

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Have you tried a 50/50 mix of acetone and transmission fluid? Best rust buster made.
I'll try it. There is a GM bulletin that says to soak them several times. Because if you break one. You have to remove the head to get it out.(I don't need that)
 
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