JLM Diesel DPF Cleaner Heavy DutyJLM DPF Cleaner Heavy Duty is one of the best diesel particulate filter cleaners for commercial trucks, tractors, machinery, buses and heavy duty diesel trucks HDV LDV MDV. JLM DPF Cleaner Heavy Duty contains a very high concentration of the active additive meaning a more effective regenaration and cleaning of the heavy duty DPF. Almost all modern commercial trucks, tractors, machinery, busses and heavy duty diesel trucks HDV LDV MDV are equipped with