A small company I work with has a 2003 Ford E-150 with 351,000 miles on it. We’re trying to extend its life as long as we can. I’m planning on running seafoam through the fuel and oil systems since it’s due for an oil change anyway.
I’ve used it before on a few 100k engines, but I’m concerned about dissolving whatever magic is letting it still run. Any suggestions or info would be greatly appreciated!
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