Here's a few more...
The fuel is a lubricant, not a solvent. The injection pump thus runs in lubricant, inside and out.
Engine speeds are slower.
The fuel burns slower, but with more total energy than gasoline, thus the loads on the pistons are generated over a longer period of time. As opposed to a gasser where the force of the gasoline burn, is more like hitting the piston with a hammer.
Unless, I am really mistakes, the actual temperature of the combustion process is lower, thus all components in the combustion chamber, (pistons and valves) are subjected to lower heat stress.
Most of these were mentioned in a "Road Test " tear-down article of a Peugeot 504 diesel.