My dad has an 07 5.9 that is his daily hot shot truck. He has changed the oil regularally in it from day one and it has never used a drop of oil between changes or anything. Now at 135,000 he gets the oil changed the other day and now everytime he says he hauls a load he has to add about 2 quarts to it. There is no sign of oil leaking or anything of that nature. any ideas or help would be great. thanks worm

 

Visible smoke? Maybe burning it. The other thing I've read of is turbo seal going and it sucking the oil out through the turbo.

 

he said that it smokes a little more black smoke now than it used to but I figured that was just from poorin the fuel to it?

 

Probably the turbo seal (although when my turbo seal went it was blue smoke) or hes getting blow by. Has he looked at the blow by tube to see what it looks like?

 

dumb question but where is the blow by tube and how big of job is the turbo seal bc he recently put a new turbo in it so if its that I know he wont be a happy camper.

 

If the blow-by tube is the same on all 5.9's its down by the starter. Its just a tube sticking out under neath the engine. You will see its slightly coated with oil around it and on the tube.

You say the smoke he is getting is black? I wouldn't guess it is the turbo then, as it probably would be blue smoke.

How heavy is the load that he is hauling? Does he have a pyrometer or anything in it to monitor engine temps?

 

about 20,000 lbs prolly and no he doesnt have any gauges