Can I get some guidance in calculating the engine load factor? I am actually looking at purchasing a pair of CAT 3412E (E rating) engines and would like to get some guidance and pointers in how to calculate the load factor for the engine? It is mentioned in the engine conditions and definitions to use it upto a 30% load factor. This cannot mean an average of 30% of the rated RPM (2300)....right!!?? I am assuming that its a combination of the usage hours and the RPM ranges that the engines will be used during these hours....something like that. Any help would be much appreciated. Thank you all in advance.