There is a Spicer test on Fuel Additives.
Can't remember all of the details but it was Diesel Fuel with 1%or2% Biodiesel that produced the smallest Wear Scar.

If you want your Fuel Injection Pump to last longer better Filtration is another answer.

I have an absolute 2 Micron CAT Secondary Filter on mine replacing the 10 nominal Micron stock spin-on Secondary Fuel Filter.
Others have used other Filters to do the same.

Also remember your Fuel Injection Pump is also lubricated by the Engine Oil. This means filtering the Engine Oil better will also benefit the Fuel Injection Pump.
I have a bypass Oil Filter that filters down to 0.50 nominal Microns.

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84 300D, 82 Volvo 244Gl Diesel