Wynn’s Diesel Inject-A-Clean isa fuel additive that works while you drive. It doesn’t physically scrub anything, it cleans chemically as the fuel system operates.

Here’s how it actually works:

Add it to the fuel tank

Pour the bottle into your diesel tank, usually before filling up. As you drive, it mixes with the diesel and flows through the entire fuel system.

It uses detergents & solvents to break down deposits

Inside the additive is a blend of:

• Detergents: loosen grime
• Solvents: dissolve carbon, varnish, and gum
• Lubricants: protect injectors and pumps

These chemicals target the buildup that forms on injector tips and inside the fuel system over time.

It cleans injectors during combustion

As the treated fuel is injected into the engine:

• Deposits on the injector nozzles dissolve
• Carbon and soot are burned off or broken down
• The injector spray pattern is restored

This matters because injectors need to deliver a very fine mist, even small deposits disrupt combustion efficiency.

It improves combustion quality

Once injectors are cleaner:

• Fuel atomises properly again
• Combustion becomes more complete
• Engine runs smoother and more efficiently

Dirty injectors cause incomplete combustion, which leads to more soot and further contamination elsewhere (EGR, turbo, DPF).