The DEF Industry Blog
In-depth guides, compliance updates, and practical advice for fleet managers, equipment operators, and construction site supervisors. Everything you need to keep your diesel operation running efficiently and compliantly.
Keep Fleet DEF Between 12°F and 86°F With Outdoor DEF Storage
Fleet-focused procurement checklist for outdoor DEF storage. Choose heated, DEF-compatible setups, prevent contamination, and schedule deliveries to…
7-Step Fleet Cleanup for Water in DEF Tanks
Fleet operators: when water contaminates DEF, act fast. On site refractometer checks, a seven step tank cleanup, documented samples for claims, and bulk…
When Hundreds of Gallons Spill: Is DEF Hazardous for Fleet Operators
Fleet operators: read the SDS, use ISO 22241 equipment, prevent contamination, spot ammonia, and contain spills before they reach waterways.
Fleet Managers: Stop Route Derates with DEF Tank Monitoring at 20%
Fleet managers: match vehicle UQLS with depot DEF tank monitoring, verify fluid with a refractometer, and schedule resupply before 20% to avoid derates.
Turn a DEF SDS into a Job Site Checklist Your Crew Will Use
Skip long SDS PDFs. Learn the four DEF SDS sections fleets need, make laminated job site checklists, test DEF, and order bulk delivery.
Fleet Operators: Wet Hosing DEF Step by Step with ISO 22241 Checks
Operator guide for fleet wet hosing DEF: step by step delivery checklist, ISO 22241 checks, contamination controls, cost triggers, and supplier must-haves.
Audit Ready DEF Refractometer Calibration for Fleet Operators
Field first steps to zero and verify DEF refractometers, with 32.5% certified checks, an audit ready printable calibration log, and supplier sourcing for…
Fleet Managers: Decode DEF Date Codes Fast with YYWW & BlueDEF
Fleet techs can read common DEF date codes quickly. Learn YYWW, YWW, Julian and 11 character BlueDEF formats, verify shelf life, and build a simple fleet…
50,000–100,000 Mile DEF Filter Replacement for Technicians
DEF filter replacement for technicians. Parts checklist, prefill and priming steps, spill disposal rules, and clear guidance on when to DIY or use a shop.
Act Fast: Diesel in a DEF Tank, 6 Step Checklist for Drivers
Shut the engine, record fill level and time, and call a diesel tech. Follow a prioritized 6 step driver checklist and demand Rotunda test-strip and…