I can't think that this will make any difference. It will make the diesel 'heavier', but not to the extend it should cause a problem. Obviously the more diesel in the tank, the lower the concentration ...
The best diesel injector cleaners at a glance: Most comprehensive diesel injector cleaner: STP Ultra 5-in-1 Diesel Fuel System Cleaner – buy from Amazon The best for carbon deposits: STP Diesel ...
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