Maximum Lubrication & Superior Cleaning for Unrivaled Performance

MINIMUM 5% IMPROVEMENT IN FUEL ECONOMY

The best defense against low lubricity and harmful deposits. Howes Diesel Defender cleans fuel injectors, prevents coking and all harmful deposits while adding up to 2.5 times the amount required lubricity to provide superior power and performance. Diesel Defender™ also protects your system by safely removing water and is guaranteed to increase fuel economy and save you money.