I saw the thread on soot but thought I would ask for opinions on Walker Fuelseps. From their WEB site:

"The FUELSEP® is a "no-maintenance" fuel treatment device that improves the combustion of diesel fuel to burn more completely. Improved combustion means less soot, less noise, lower exhaust temperature, and better fuel economy. No magnets are used, and the system mounts inline to the engine fuel supply line. "

http://www.walkerairsep.com/product.asp

Anyone with thoughts?

Warm Regards,
Jack