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Old 02-23-2008, 05:14 PM   #25
olblue60@aol.com
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Join Date: Dec 2003
Location: Silver Spring Md.20901
Posts: 2,031
Re: 4000 rpm @ 55 mph

If you go to an interstate with the mile markers, you can check it against your truck odometer. It is a direct corolation to your speedometer to check if it is correct or not.
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