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Black soot tailpipe

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Old 11-02-2011, 08:53 AM
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No soot on my 5.0 and it's over 16,000 miles.
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Old 11-02-2011, 01:44 PM
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Originally Posted by mrpositraction
If you are running E85 you 5oh guys, the exhaust tip will be cleaner!
Nobody sells E85 where I live............I'm going back to 93 octane.
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Old 11-02-2011, 04:47 PM
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Originally Posted by bcb97
Doesn't sound normal to me. I would say take it in to make sure it's ok but looks like you've probably voided your warranty with all of your mods. Soot around the tailpipe sounds normal but not spitting on the ground.
Yeah... Actually has stopped doing it after the tune. The only warranty mods that are even close to a void is the removable tune. I don't blame people for being paranoid about it though.
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Old 11-02-2011, 05:48 PM
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Originally Posted by justjimmy
No soot on my 5.0 and it's over 16,000 miles.
What octane do you normally run?
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Old 11-02-2011, 05:49 PM
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I run 93 octane and do not have soot.
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Old 11-02-2011, 08:37 PM
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Originally Posted by bcb97
I run 93 octane and do not have soot.
Have you always used 93 octane?
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Old 11-02-2011, 08:41 PM
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Originally Posted by Georgiaboy5.0L
Have you always used 93 octane?
Yes
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Old 11-02-2011, 08:48 PM
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Originally Posted by bcb97
Yes
I bought my F150 in April and used 93 octane all summer and never noticed the black junk like I do now using 87 octane........so I'm going back to 93 octane.......5 dollars more per tank full is a small price to pay for added mpg and a clean tail pipe.
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