Ford Mustang Forum - View Single Post - Can Seafoam be a blessing for Mustangs ???
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post #5 of (permalink) Old 11-27-2012
Quan Cheese
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I used it in my 04 GT. My car only has 56k so I had very little smoke. I put it in the vac line oil and the gas tank. MPG might of went up a little. Don't add it to quickly or you can hydro lock the engine. You really have to screw up and dump it in like crazy to do that
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