Purpose and Specifications

The BOSAL 258-972 Fuel Additive, also known as EOLYS DPX 42, is a premium 4.5-liter solution designed for diesel vehicles with PSA technology and a dedicated fuel additive tank. It lowers the soot combustion temperature in your DPF (Diesel Particulate Filter) to around 550°C, enabling effective regeneration even during short city drives.

• Prevents DPF clogging to keep your filter clean and efficient.
• Reduces harmful emissions for a cleaner environment and easier inspection passes.
• Saves fuel and power by avoiding higher consumption and engine strain.
• Extends DPF life, delaying costly repairs.

This Bosal GEN additive matches OE standards, perfect for transport vehicles with DPF regeneration systems.

When to Use / Replace?

Refill when your dashboard warns of low additive levels, typically every 60,000 to 100,000 km or 24-36 months, depending on driving habits. Top up during routine services if mostly city driving prevents natural high-temp regeneration. Shelf life is 3-5 years unopened; store in a cool, dry place.

Practical tip: Operates best in engine temps from 200°C to 550°C for soot burn-off.

FAQ

Q: Is this additive compatible with my PSA diesel car?
A: Yes, for vehicles with fuel additive tanks and DPF regeneration like certain Peugeot, Citroën, and Ford models.

Q: How often do I need to replace it?
A: Check your tank every 10,000 km; full refill around 80,000 km based on usage.

Q: Can it help pass emissions tests?
A: Absolutely, by ensuring proper DPF function and low emissions.