what is the operating range for the exhaust temps, I'm mainly concerned with the high end. I tow 20,000 lbs. With 7,000lbs it runs 5lbs and 650degress at 68mph. But do alot of towing in the mountain with the big trailer.

 

There is extensive information on this at ford-diesel.com. This page appears to be common ownership/management as this one. At a minimum they had the same web page builder.

 

Actually, Ford-diesel.com is run By a guy Named Jason Lester. He is a real nice guy. They don't share a common management, that I know of, they just both use the same brand of Bulliten board software. I used to be a regular over there, till I sold my Diesel

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BigBunnell

98 F150 4X4 XLT flareside V6 5sp K&N Flowmaster and some other goodies

 

As long as you stay below 1,000 degrees, you'll be fine. And from your post it looks like you'll have no problem!

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1999 F-250LD 4X4 XLT Supercab, Short Bed, 5.4L, AT, 3.73LS, 33"Wrangler ATS, Custom Dual Exhaust, Custom Air Intake, Superchip, Factory Step Bars, Tinted Windows, Vent Visors, Diamond Tool Box & Bed Rails, Color: Harvest Gold cc "Ready to Farm"