
Diesel Exhaust Fluid: Prevent Deposits & Protect Performance
What causes diesel exhaust fluid (DEF) deposits, and how can you prevent them? PEAK explains how DEF purity, exhaust temperature and proper handling affect SCR systems, fuel economy and diesel performance. Scott Bredenberg, Training Manager at Old World Industries (OWI), joins host Brad Gillie from SiriusXM, Channel 90’s Late Shift, for a technical discussion of diesel exhaust fluid chemistry, contamination, deposit prevention and common aftertreatment misconceptions. Whether you operate a diesel pickup, race team transporter or commercial fleet, learn what happens after DEF enters the exhaust stream and why fluid quality matters. IN THIS EPISODE: • DEF chemistry: 32.5% automotive-grade urea and 67.5% deionized water • How selective catalytic reduction (SCR) converts nitrogen oxides (NOx) into nitrogen and water • Why DPF regeneration and DEF dosing perform different jobs • How idling, low loads and exhaust temperature influence deposit formation • How deposits can affect backpressure, fuel economy and DEF consumption • BlueDEF Platinum’s approach to deposit prevention • Factory-blended technology versus separately added DEF additives • Contamination risks during storage, dispensing and refilling • DEF shelf life, heat exposure and freezing temperatures • Why a DEF warning does not always mean the fluid is faulty Race Industry Now | Episode 643 “DEFinitive Insights – Diesel Exhaust Fluid’s (DEF) Purpose and How Purity Equals Peak Performance” by PEAK Presented by ARP, Inc., PEAK, Fifth Third Bank Motorsports, Ferrea Racing Components, CTech Manufacturing, & Race-Fan. Explore racing technology, products and suppliers: https://www.epartrade.com Subscribe for more technical conversations with the companies and experts serving the racing industry. #DieselExhaustFluid #DieselPerformance #BlueDEF