Hello, my name is ***** ***** I am going to assist you with this.
It is very easy for things to get sucked into this genset. The cooling air intake is located at the bottom of the genset. Any dirt/grease/oil/debris that is present in the air will get sucked into the unit.
I regularly service several of the HGJ series that are mounted in mobile dog grooming vans, and I am constantly having to clean dog hair out of them.
Are they absolutely certain that it was cooking grease, and not just regular engine oil?
Are they absolutely certain that the genset needs to be replaced?
Sometimes these units are a bear to troubleshoot, but I have yet to see one that had to be replaced, with the exception of 1 unit that was run out of oil. Even then, we just replaced the engine, not the entire unit.
What is broken on it that it needs to be replaced?