new L4701 regeneration at 5 Hours

[MHarryE]

Yesterday morning I saw that my L6060 was at 80% and 30.5 hours. Lately its just been used for plowing around the home place but yesterday I had to road about 3 miles to another of our farms, plow the road, and pull back a loaded trailer. Now I am at 33 hours and 67%. Nothing like full speed driving on hills to load up the engine and passively regen. It takes a lot more than roading for my M135GX to do any passive regen - like pulling a cultivator at near 100% power.

 

[ovrszd]

Thats how our grader is. If I am just doing normal gravel road maintenance, running at half throttle for hours at a time regen comes more often. If I'm doing hard work at full throttle it is stretched out.

 

[oldironsights]

For those of you unfortunate enough to operate an engine with EGR, EGR cooler, DOC & DPF (With or without SCR), when your ECM commands frequent exhaust regenerations, check your engine oil level often to make sure your oil level does not rise or "grow".
Exhaust regeneration injects fuel well into the exhaust cycle to heat up the DOC & DPF for soot load burn off. Often the unburned fuel seeps past the rings into the base, diluting the engine oil.
As a Diesel Mechanic, I have to deal with this crap daily!

 

[sixdogs]

For those of you unfortunate enough to operate an engine with EGR, EGR cooler, DOC & DPF (With or without SCR), when your ECM commands frequent exhaust regenerations, check your engine oil level often to make sure your oil level does not rise or "grow".
Exhaust regeneration injects fuel well into the exhaust cycle to heat up the DOC & DPF for soot load burn off. Often the unburned fuel seeps past the rings into the base, diluting the engine oil.
As a Diesel Mechanic, I have to deal with this crap daily!

How bad for the engine is diesel fuel added to the oil? Ruin the engine?

 

[oldironsights]

How bad for the engine is diesel fuel added to the oil? Ruin the engine?

It is very, very bad!
Internal pressures generated by high compression combined with the greater heat content of Diesel fuel generate much higher loads on main & rod bearings than gasoline engines.
Combine this with lower RPM operation than a gasoline engine & the load per revolution is increased.
Engine oil diluted with fuel will result in much lower oil pressure & babbitt damage.
Oil & filter change will restore oil pressure but one must find the root cause of the excessive exhaust regen's. Excessive customer complaints have resulted in a relaxing of the perimeters to the ECM commands by a ECM recalibration. (Cummins ISL & ISX engines)
Sometimes excessive oil consumption (Due to piston rings being worn or not yet seated) that will send more soot to the DOC/DPF & clog the cat face or DPF resulting in a greater pressure differential across the DPF that triggers the ECM to perform more frequent regen's.
This stuff drives the owner/operator to the poorhouse, the engineers to madness & the mechanics to early retirement. Thank you EPA!