Fuel system contamination is a year-round problem for diesel-powered vehicles, especially in commercial vehicles where downtime can be expensive and can even lead to loss of customers. Of special concern in recent years is the presence of black tar-like material in diesel fuel, commonly referred to as asphaltenes. This material can quickly clog fuel filters, fuel injectors and other critical diesel fuel system components. Fortunately, there’s a solution in Penray’s Total Diesel Fuel System Cleaner. This product is especially helpful in dissolving and preventing the formation of asphaltenes in diesel fuel, while cleaning other deposits and contaminants from the fuel system. The chemists at Penray have developed a proprietary diesel fuel system cleaner that dissolves and disperses asphaltenes and other diesel fuel contaminants. Penray Total Diesel Fuel System Cleaner attacks asphaltenes, dissolving them and removing them from fuel tanks, fuel filters, fuel injectors and lines and preventing their recurrence.