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Old January 15th, 2008, 08:34 PM   #1
lgottler
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Default When can you tow in OD?

So in what year or transmission types can you safely tow in overdrive? Reading a post here about the new transmissions being able to handle it....

My '94 Suburban 7.4L 4.10 gears, towed up buddies Samurai to West Branch this past weekend. Left it in Drive to check mileage. Towed without issue, I left it around 63mph on cruise control. I averaged the trip up at 7mpg. On the way back I set it in overdrive and cruise on at 63mph and I netted 8.5mpg....

The only time it downshifted while in OD was when I took it into Drive to get over the Zoo. I don't have a trans temp gage, so can't say anything there....

Is that old of a trans "safe" to do OD in if it doesn't hunt for lower gears often? Manual and door says DO NOT TOW IN OD in bold print

Lucas
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