i am driving a DD15 with the mercedes 12 speed auto
after coming out of a 13 speed
it shifts better smother then i can
gets better mileage then the manual
nothing like the older autos
pulls Donner just as well as the 13 speed
no trouble in the snow
no more shifting for me
Cascadia automatic VS manual
Discussion in 'Trucks [ Eighteen Wheelers ]' started by manny1423, Apr 28, 2015.
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