BlueDEF PLATINUM™ with advanced SYSTEM SHIELD™ technology. The first premium Diesel Exhaust Fluid of its kind， the proprietary formula tackles deposits that can build up in the SCR system.  Maintains Optimum Fuel Economy， Saves Money On Costly Repairs， Sustains The Life Of Your SCR System，  BlueDEF Platinum™ is designed to be compatible with every type of vehicle application， therefore can be mixed with standard DEF without issue.