Red line
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Joined: Jun 2013
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Red line
This is probably a dumb question but has a simple answer.. Anyways, I recently got a 1989 Ford F250 7.3 and was curious as to what the red line right at the 55 mark on the speedo is for. I assume its something to do with overdrive? I don't have the owners manual, just an aftermarket one and it doesn't say anything about stuff like that. Thanks!
Senior User
Joined: May 2005
Posts: 326
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From: Carthage, MO
Back in the day 55 was the national speed limit, so the red mark means "hey dummy, you're on thin ice beyond this point". As if anybody paid attention to it, and now it just looks out of place.
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