You probably are having some transmission slippage.
i should they have the same body style and all.
They must be crap! Our company has two dodge 1500's, and one 2500. We have had four broken leaf springs so far. we never carry heavy loads in two of these trucks. Dodge should recall them. Do i hear class action?
Should be 6.5
Either a worn or a bent componenet.
spark pluggs
Fuel Pump? Fuel filter?
Yes
No.
No
10w30
I recommend leaving them stock.
check plugs &wires