Yes, you can use Redex DPF Cleaner to prevent problems as well as cure them. If your car has a DPF, it is at risk of becoming blocked, and DPF problems can be expensive to fix. Soot naturally builds up in the filter as you drive, and needs to be burnt off regularly to avoid serious blockages.
Using Redex DPF Cleaner in every second or third tank will keep it working well. The soot burns away at high temperatures – so when you drive for a long time and a high speed your car can get hot enough to clear the filter. However, it’s not a very reliable way to keep the DPF working. Redex DPF Cleaner is much easier as it lowers the temperature that the soot burns at, so it will burn off during normal driving. If you add it to your fuel regularly it will ensure that you avoid DPF problems.