Robert H. in FL

Would it be safe to add Sea Foam directly into each cylinder through the spark plug holes to soak piston rings?

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Brian Carter

Last year I used Sea Foam in my ’81 Honda 500 Enduro after a cylinder lost compression. I let is soak for a few hours and my compression came back. Rode it all summer. It sat over the winter and lost compression again. Now I’m taking my time with it and letting it soak longer. After 24 hours it’s already working better! I’m going to give it a good multi-day soak, cranking the engine daily like Jim said. I expect that will at least get me through the summer. It’s good stuff. It works.

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