6600 oil consumption

[LarryOH]

There is a long explanation along with my question, but I"ll try to keep it short. I overhauled the engine 3 years ago. When I first change the oil it stays on the full mark for a few hours, maybe 20 (hour meter does not work). After running it for a period of time the oil begins to drop on the stick and continues to do so until I change it again. When the tractor is running in the shop the fumes are terrible, making it hard to breathe and burning the eyes. Would this be oil or fuel? My question - could fuel be getting into the oil after a period of time diluting it and causing oil consumption. I can"t figure why it takes a period of time before it starts to burn oil. I was about to take it apart again thinking the rings did not seat, but I first wanted to check into the possibility of fuel causing the problem.
Any help would be appreciated.

 

[Jerry/MT]

How much oil are you using in how many hours of operation, and how hard are you working the tractor? Gas or Diesel?

 

[Chris in SK]

A 6600 should have 300 hour oil changes, and I would expect some oil consumption and to have to top it off few times to get to the next oil change. Most diesel tractors, especially if they are cold will push out enough fumes to make your eyes burn in a few minutes in a building. Did you have the injectors checked when you had it apart? Does it reach normal operating temperature, thermostat and temp gauge working? Fords, like most tractors need to be worked hard. You don't say what you do with this tractor, but I would start by working the nuts off it for about 10 hours.

 

[RickB]

Fuel getting into the crankcase will raise the oil level, not lower it. Sounds as if the rings, particularly the oil control rings, didn't seat. Exact numbers on consumption would help.

 

[LarryOH]

I understand what your saying about it making oil. That is what I would have thought. I thought possibly it was being dilluted enough that it was eventually getting past the rings. I would have thought that if it were the rings it would be a more consistant loss. With the hour meter not working it is hard to give the rate of loss. Today I pulled the injectors and am going to have them pressure tested Monday. I thought one of them might be dumping to much fuel in. I don't get to work it real hard. Brushhoging is the most work it gets along with a disc mower and hay rake. After this long is there still a chance it might seal up?

 

[Anonymous-0]

Try some Shell Rotella 15-40 on the next oil change.

 

[LarryOH]

I will. I almost tried that this change but already had some of the other oil. Is it known to reduce oil consumption?

Thanks for the response