Search Results

Obstructed fuel lines and filters in diesel engines during cold weather is a common phenomenon today. It is the perception of the marketplace that water crystallization is a contributor to such blockage. However, demonstrating this effect in the laboratory has been a problem. Standard testing methods - such as pour point (ASTM D-97), cloud point (ASTM D-2500), and cold filter plugging point (IP-309/75) - were not designed as and do not provide a sensitive means to measure the performance of deicing products. In fact, all of the aforementioned tests are derivative measures of fuel icing. A more direct measure of the temperature of ice formation in the fuel delivery system is required. Although lower alcohols - such as methanol, ethanol, or 2- propanol - have been recommended for use in combination with other diesel fuel additives, diesel engine manufacturers place strict limits on the maximum levels allowed for warranty purposes.