I also concur with some of the other ford owners....with my 09 I have it set around 6. Usually, the first tow after sitting a bit, I lower the number down to around 5 and warm the brakes up a bit, otherwise they tend to lock-up...especially on wet roads...
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2015 Rushmore Springfield
Disc Brake upgrade, Goodyear G614 tire upgrade
RV FLEX-ARMOR roof, Mor-Ryde IS suspension
2017 F350 Dually 4x4 6.7 Bronze Fire
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