Expert guides, tips and insights for diesel exhaust fluid maintenance
Construction fleet managers: DEF system failures in Tier 4 excavators, dozers, and loaders shut down jobsites. Learn how to prevent DEF crystallization in all your heavy equipment.
Class 8 semi trucks are the most vulnerable diesel vehicles to DEF system failures. This guide covers the most common 18-wheeler DEF problems, costs, and how to prevent them.
Become a NüDef DEF additive distributor. Learn about territory availability, account structure, and how to apply for the wholesale distribution program.
Truck stop owners: DEF additive is a high-margin product that sells to every driver who fills DEF. Learn how to add NüDef to your product mix and open a retail account.
Fleet managers: see how a NüDef fleet DEF additive program reduces SCR repair exposure across your entire fleet. Treats 25 gallons per bottle. Fleet pricing available.
Yes. DEF additive prevents urea crystal buildup on the SCR injector tip. The mechanism, lab data, and why most additives fail.
Best DEF additive 2026: NuDef vs Power Service, Rislone, Hot Shot DEFender & more. Honest test results, dosing, P207F prevention. Pick what works for your diesel.
How much DEF additive per gallon? NüDef doses at 1 bottle per 25 gallons — 2-4 doses for a pickup, 12-20 for a semi, 4-8 for a motorhome. Full dosing guide for every diesel application.
DEF crystallizes when urea evaporates, concentrates, and deposits on SCR system surfaces. Learn the 5 causes of DEF crystallization, where crystals form, which fault codes result, and how NüDef…
Buy NüDef at 100+ stores including Gebos, North 40, D&B Supply, and Iowa 80. Or order direct at nudef.com with fleet volume pricing.
P207F, P20EE, P20EF, and P20ED decoded. Each code’s cause, which sensor to check, and one additive that prevents all four.
NüDef treats 25 gallons. Rislone treats 16. One prevents crystallization; the other cleans after damage. Full ingredient comparison inside.
Drain, flush with distilled water, and refill in under 30 minutes. Removes deposits that cause fault codes. Works on trucks, pickups, and equipment.
Transit bus DEF crystallization costs fleets thousands per bus annually. Learn why stop-and-go duty cycles cause transit def crystallization and the fleet-wide prevention protocol that…
Diesel pushers sit idle for weeks, and stale DEF crystallizes the SCR injector. Prevent RV fault codes with one pre-trip step.
LML and L5P Duramax trucks throw P207F and P20EE codes when DEF crystallizes. Stop the $3,000 injector replacement for under $30.
Ram 2500/3500 6.7 Cummins DEF crystallization triggers P207F codes and 5-mph derates. Cause, fix, and a $30 preventive treatment.
Ford 6.7L Power Stroke DEF failures on F-250, F-350, F-450 cause P20EE codes and limp mode. Real fixes, fault codes, and a 0 preventive solution.
SCR system maintenance prevents DEF crystallization, injector failures, and costly catalyst replacements. Complete guide to protecting your diesel SCR system with NüDef.
Industrial generator DEF systems face unique crystallization risks from standby duty cycles. Fleet manager guide to preventing DEF failures on Tier 4 generators with NüDef.
Learn how to protect your diesel vehicle’s engine and boost performance by investing in the best diesel exhaust fluid. Shop NüDef today.
Avoid DEF issues like crystallization, freezing, and contamination. Learn how NüDef helps diesel engines run smoothly with simple, preventive maintenance tips.
White deposits in your DEF system? Diagnose crystallization vs contamination, fix it step-by-step by severity level, and prevent it from coming back.
Protect your diesel engine this winter! Learn how to keep DEF from freezing with smart storage tips and additives like NüDef. Stay efficient in the cold.
Diesel Exhaust Fluid (DEF) is an important addition you need to know about if you’re new to driving a diesel truck or big machinery. Beyond being a fluid…
If you own or operate a diesel vehicle or heavy equipment manufactured in the years following 2010, you’ve likely encountered Diesel Exhaust Fluid (DEF)…
DEF freezes at 12F. Heated tanks, insulated lines, and NüDef additive keep your SCR system running in sub-zero conditions.
In the world of diesel engines, maintaining the health and efficiency of your vehicle’s exhaust system is paramount. One common issue that can arise is…
P20EF means your SCR catalyst efficiency is below threshold. What triggers it, how to clear it, and how to stop it from returning.
DEF is a 32.5% urea solution required by all diesel SCR systems since 2010. Learn how it works, why quality matters, and what goes wrong.
