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2004 to 2008 F-150 and Mark-LT 4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs. |
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Sorry. Probally should have been more specific. Using 87t because i am waiting on custom tunes and have a CAI. Have recently switched to 93 because it was having issues(prior to tunes) and the higher octane seemed to help
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