The C12 is a VERY good reliable engine. My tandem truck at work that is assigned to me has 13,000 hours on it, and still runs pretty strong. It also has the power sucking 6 speed Allison, which is a good cruising transmission, but not very good in a "working" truck. 3rd is too low to plow snow, revs too high and can't get be enough speed to throw the snow far enough, and 4th is too high, engine lugs too much, and unless you lock it into one or the other, it will continuously shift back and forth between 3 and 4th. If I was to leave it in 4th, it lugs down too low, and that makes the EGT'S way high. But, I doubt you'll have any problems like that, as when plowing snow your foot NEVER leaves the floor, and you weigh about 68,000 Lbs. I have had that same tandem at 83,000 lbs, and it still does fine. A little slower on the take off, and a little longer on the slow downs, but it does it without any hesitation. I believe the engine in my truck (a Sterling) is 400 or 410 HP, or somewhere in that range, I don't remember offhand. So, of 13,000 hours, about 10,000 of then are heavy, foot on the floor, working to the limit hours. They are a good combination. It has never had anything done to it. Not injectors, not a turbo, nothing. Couple of charge air coolers that cracked from vibration. Unfortunately it will be replaced by a 1,500 hour hand me down State truck, a 500 hp Detroit Diesel powered Freightliner that will have no where near the reliability of the Sterling, but they won't let me keep the old Sterling, it's getting tired all over. If you do need just a twist more power with an electronic Cat like that, you can do a little DIY project and build a couple resistor wires for it. One plugs into the fuel temp sensor and is a clean 30ish HP, and I feel it actually takes away the ratty idle of the C12's, I believe it is a 150 ohm resistor, but can't remember offhand. The other plugs in line to the boost pressure sensor and is about 40ish hp, but is a dirty boost if you hammer it before the turbo is spooling. If you take off easy it's not so bad. They can be plugged and unplugged in seconds. Almost all of the trucks I have driven have had the C series Cats in them, and I have run them for a little more juice when I was in hilly areas, heavy loads, or trying to get a bit more done in the same amount of time. I believe the boost pressure resistor is a 1500 ohm, but can't remember that for sure either. I've got a little kit here with the stuff to make them if I need it that has the labels in it. Some guys will say you shouldn't do that, but I've never had trouble in all the years I run them, and if you look online you will see OTR guys that run them for millions of miles and saw no problems. Just an idea if you needed a boost to get somewhere if you were low on power. I don't think you'll have an issue though, you should be just fine at that light weight. A C12 is pretty economical too, cruising with a normal weight my truck is pretty decent on fuel, only using 35 gallons in a 10 hour day scraping and hauling at normal capacity. Now in a 12 hour day of plowing snow all day, it will burn right at 100 gallons in a day no problem. You found a good combination I think.
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