What you’re referring too is called a Diesel Particulate Filter.
It’s not the clogging by sulfur in the DPF that you need to worry about, but the ash built up from burning additives added to the fuel and from not using low ash engine oil. Check the owners manual, there’s a limit on the grade of biodiesel you can burn.
During a regen cycle the soot is completely burned off, no soot is left behind. The ash comes from the combustion of additives in the fuel and oil. The ash isn’t burnt off during a regen cycle and accumulates over time and mileage.
If you’ve purchased the truck used, there’s no telling what’s been put in the fuel tank or the type of oil used.
Keep in mind you’re running a CRD engine and everything that goes with it. Fuel sulfur content aside, one needs to have trust in their fuel source. Water separators and fuel filters will do a great job of protecting things but neither will protect against cross contamination of diesel fuel with other fluids such as gasoline.
In the US diesel pump nozzles are green and gasoline nozzles are black, in Mexico the colors are swapped.
Spotted what looked like a 2015 Fuso FG in San Felipe when I was in Baja Norte last December. There seemed to be Sprinters everywhere.