This truck doesn't tow, my dads does but only a light boat, which maybe weighs 800 pounds wet so that doesn't really count. Its almost like Ford figured something out between 05 and 07 with the rear ends on these.

The pinion seal was replaced on the 05 when it was new at around 12k miles, and it just went out 5k miles ago and was changed again. I'm usually pretty sensitive to drive shaft vibrations, I went through quite a bit fixing them on my SDL. This truck drives smooth I can't believe the drive shaft is that far out of balance from the factory.

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2006 CL500
2009 C300 4matic
1969 280SE
2023 Ram 1500
2007 Tiara 3200