TURBOBLUE Diesel Exhaust Fluid (DEF/AdBlue) is manufactured and supplied from Chennai, Tamil Nadu, and is the trusted choice for fleet operators, transporters, and industries across India. Eliminate harmful NOₓ emissions and protect your engine investment.
DEF is a high-purity aqueous urea solution used in Selective Catalytic Reduction (SCR) systems to dramatically reduce diesel engine emissions.
TURBOBLUE DEF is formulated with ultra-pure urea (32.5% concentration) dissolved in deionized water, meeting ISO 22241 and DIN 70070 international standards.
Injected into the exhaust stream, DEF reacts with NOₓ gases in the SCR catalyst, converting harmful nitrogen oxides into harmless nitrogen gas and water vapor.
Essential for all modern diesel vehicles and machinery compliant with BS6 emission norms. TURBOBLUE ensures your fleet stays road-legal and penalty-free.
Non-hazardous, non-flammable, and biodegradable. TURBOBLUE DEF leaves no toxic residue and is completely safe for transportation, storage, and handling.
Proudly manufactured in our state-of-the-art facility in Chennai, Tamil Nadu, with rigorous quality control at every stage of production.
Proper DEF use prevents SCR system fouling, extends DPF life, and reduces maintenance downtime—saving you lakhs in repair costs over time.
Kept in a dedicated, sealed tank in your vehicle—separate from the fuel tank.
The vehicle's ECU precisely controls DEF injection into the hot exhaust stream.
DEF decomposes to ammonia (NH₃), which reacts with NOₓ in the SCR catalyst.
Only harmless N₂ (nitrogen) and H₂O (water vapor) exit the tailpipe. Zero NOₓ.
TURBOBLUE is a trusted Diesel Exhaust Fluid manufacturer and supplier based in Chennai, Tamil Nadu, delivering ISO 22241-certified DEF to fleet operators, transporters, and industries across Tamil Nadu and Pan-India.
"We switched our 80-truck fleet to TURBOBLUE DEF six months ago. SCR system errors dropped to zero and our fuel economy improved noticeably. Excellent product!"
"The 210-litre drum is perfect for our transport depot. Quality is consistently top-notch, delivery is always on time. TURBOBLUE is our go-to DEF supplier."
"As a construction company with heavy machinery, BS6 compliance is critical. TURBOBLUE DEF keeps our equipment running cleanly without any downtime issues."
"The biggest fear with budget or local DEF brands is crystallization at the nozzle. So far, TurboBlue has been incredibly pure. We haven't had a single "SCR Malfunction" light or forced manual regeneration issue since making the switch."
TURBOBLUE is the flagship Diesel Exhaust Fluid (DEF) brand of Southern Lubricants, a Chennai-based leader in advanced automotive and industrial fluid solutions. We set out with a single mission: to help India's fleet industry transition cleanly and cost-effectively to BS6 emission standards.
Our manufacturing unit in Ambattur, Chennai uses cutting-edge technology to produce Technical-grade DEF that exceeds international quality benchmarks. Every batch is rigorously tested for urea concentration, pH, density, and purity before leaving our facility.
Our state-of-the-art facility in Ambattur, Chennai is equipped with advanced blending technology, automated filling lines, and in-line quality analyzers ensuring every drop of TURBOBLUE DEF meets the highest international standards.
Our climate-controlled warehouse ensures optimal storage conditions for DEF. Proper temperature management between 11°C–30°C prevents crystallization and maintains product integrity from production to delivery.
We're passionate about cleaner air. TURBOBLUE DEF helps India's fleet industry reduce NOₓ emissions by up to 99%, contributing to healthier cities and a cleaner planet.
Every batch undergoes multi-point quality checks. We test urea concentration, refractive index, pH, density, and trace metal content before any product leaves our facility.
We're not just suppliers—we're partners. Our technical team provides application guidance, dosage calculations, and 24/7 support to maximize your fleet's performance.
Premium ISO 22241-certified DEF available in five convenient sizes for every fleet and application need.
Perfect for passenger vehicles, light commercial vehicles, and emergency top-ups. Easy-pour spout, tamper-evident seal.
Ideal for small truck operators and taxis. Dual-grip handle design for easy handling. Excellent value per litre.
Steel/HDPE drum for transport depots and service stations. Comes with drum pump kit option. Excellent cost savings at scale.
Maximum value for large fleets, mining operations, and industrial sites. IBC pallet tote with integrated valve for bulk dispensing.
A glimpse into TURBOBLUE's world-class manufacturing, product range, and operations.
Expert articles on diesel exhaust fluid, BS6 compliance, SCR technology, and fleet management.
India's shift to BS6 (Bharat Stage 6) emission standards mandates SCR technology. We break down exactly what this means for your fleet and how DEF fits in.
Improper DEF storage can lead to contamination, SCR damage, and costly downtime. Avoid these critical errors with our expert guide to safe DEF handling.
Beyond emission compliance, proper DEF usage protects your SCR system, reduces DPF regeneration cycles, and improves fuel economy—delivering real ROI.
With cities like Delhi and Chennai facing dangerous NOₓ levels, we explore how the widespread adoption of DEF in commercial vehicles is transforming air quality.
Dashboard warning lights related to the DEF/SCR system can be alarming. Learn to diagnose and resolve the most common DEF system faults before they escalate.
Not all DEF is equal. Substandard product—even slightly off-spec—can crystallize in injectors and destroy SCR catalysts. We explain the true cost of cheap DEF.
Reach out for product enquiries, bulk orders, distribution partnerships, or technical support.
Our team is ready to help you find the right DEF solution for your fleet. Contact us via any channel below.
No. 68, Melayanampakkam Road,
Melayanampakkam, Chennai – 600 095