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I routinely run around with 10k # out the back (see my picture # 19) sometimes with too many extra toys along it gets up towards 15k # but that only affects the 'off the line' performance. My tweaked F-350 with the PSD & 6 speed hardly feels it.
The only time I feel it is when the missus swats my for passing 4 cars at a time.....
Lucerne, I wouldn't be complaining about diesel at the price your paying, we have been around US$4.00 / US gallon ($0.80 Cdn. / litre) for quite some time now.
Best of luck.
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Art, we're not finding that at all. In fact the one truck we have very rarely leaves the yard without a float on the back of it, it has about 300,000 miles on it and we're thinking of doing a rebuild on it this winter, but only because the chassis is a 2001 and in fantastic shape. It certainly still pulls strong and has been trouble-free. It has also had an oil change every 3,000 miles (5,000 km) since new.
When you say 'dead' what exactly are you referring to?
My own truck has 155,000 miles on it and still runs like the day I bought it.
On average we run them about 250,000 miles or about 400,000 kilometers before we replace them.
Best of luck.
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AV8R, no need to be sorry, it's not me driving the Cummins.
<;-p}
Seriously, I have a 6TB in a medium truck, it's a good motor, it just too narrow a power band, it needs a bunch more gears than the factory will give you get in a pickup.
Best of luck.
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Randy, I realize they have 6 speed trannys, my Ford does too, but that in reality is only 4 forward gears since one is a bull-low & 1 an O/D. The problem is the spread between the gears, they bias the spread to suit 'average' driving, pulling loaded tri-axle or tandem duals float out the back is hardly 'average'. With my medium duty, there are 10 forward speeds, excluding bull-lows or O/D's. The torque ratings, according to Cummins, are only to about the 2,400 rpm point, after that they fall off rather dramatically. That means it's only making big torque over an 800 rpm band at best.
Mark, the oil suffers even more abuse in a PSD since the oil is also used as hydraulic fluid in the 'direct injection' fuel injectors. Anti-foaming properties are so critical that you can actually feel the power loss if you use the wrong oil or it is due for an oil change. The use of synthetics leads to longer change cycles and even more deterioration of the anti-foaming additives.
Art, maybe it's just 'Murphy's Law' working in reverse but we haven't really had any of those problems. We have had a couple of the torsion springs in the clutches fail, but they were covered under warranty, no questions asked.
Best of luck.
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