Join Date: Jul 2006
Location: Tuttle, OK
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sluggish feeling could be from the fact you were feeling the resistance from the snow.
Buzzing noise i have not heard while in 4x4 so I'm not sure what your hearing....could be vacuum pump i guess but its surprising you can hear that over the engine?
As far as driving long distance in 4 wheel, keep it under 55 mph and if the road clears up and is not slick take it out of 4 wheel...other than that, your fine.
Be careful though, 4 wheel drive gives a person a false sense of stability and you may tend to drive to fast for stopping condition...4x4 will not help you stop any faster.
2003 6.0 F350 dually on high cholesterol fuel (WVO)
2000 7.3 Excursion also on a high cholesterol fuel