Combines oil use in Duetz engine

1400 hours is very low for a engine that can last at least 10000 hours in a combine. Check the air filter, and see if there're leaks in the engine. I use about 1l_50 hours in a 13000 hours engine.

I don't see a problem as is most likely less than .5% of the fuel. I see more problems with an engine not using oil as it generally means fuel is going the other way. If it hasn't changed a lot since new an overhaul will most likely be costly and not gain very much. I have heard the ring seating in the first 50hours of a new engine sets the oil use rate for the life of the engine. Our 9690 (6cylinder version) likes to use the upper half of the dipstick in about 10hours, but if you run on the lower half it is less that.1% of fuel.

Pretty much standard, My R50 does the same and has about 3800 hours. 1_2 qt per day after 50 hour on a change is not 'using oil', as long as it is not all going through one cyinder. The tell tale sign of blue smoke coming at a puff at a time when cold might be different story. A diesel engine of this age build has a lot of cylinder ring to sleeve area, valve stem area and other points that can let minute bits of oil into the combustion chamber. In fact an engine that has too tight a clearance and uses no oil will not last as long as those built a little looser and consume about the amount of oil yours does to fuel burnt according to some old hands I know. Do not keep the oil up to the full mark. Keep it just above the add mark. Also as posted below the more restricted the air filter the more oil it will consume. Also check the intake for turbo lube oil leak into the airstream.

Why do you suppose it starts using oil after 50 hoursIJ Do you overfill it which covers up oil consumption until oil level gets down where it belongsIJ Or do you fill the crankcase, and then mount a heavy headIJ I have noticed oil level in a V8 Deutz changes quite a bit when a corn head is hanging on the front end. Secondly, that goofy vent hole in the dipstick tube requires extra care when checking oil level.

An air-cooled engine uses a bit more oil by design. Think about it: a water-cooled engine's cylinder needs to operate between -40 to 212 degrees, an air-cooled needs to operate between -40 and about 600 degrees. So there is more cylinder clearance at operating temperature with an air-cooled engine. The temp. range makes it efficeint to cool. The oil use is one of the big reasons air-cooled engines pretty much died with more stringent emission regs. Air-cooled aircraft engines work the same way.

If oil consumption is less than one percent of fuel ie one hundred gallons of fuel used equals one gallon of oil,this is not excessive.Also oil should not be added UNTIl level has reached the add mark.Also as stated earler,how the dipstick is inserted and how level the combine is makes a differance.We had a customer that added a quart of oil as soon as level was lowered that amount. We suggested he wait until level reached the add mark.He said it got to about the add mark,and consumption almost stopped.Just a thought.

That is exactly how ours act too. From what I've heard many say that is normal. I think the manual says something about using up to 1% of oil by volume of fuel is what to expect.