You polish the paint. You dress the tires. You protect the trim. But if your engine’s choking on carbon and sludge, what are you really driving?

Detailing isn't just about what you see—it's about what your machine feels. And when it comes to performance, the real gains are under the hood.

Why Internal Cleanliness Matters

Modern engines are tight, hot, and high-strung. Over time, carbon builds up in fuel injectors, combustion chambers, and intake valves. Oil systems start to sludge. Fuel delivery starts to suffer.

That all adds up to:

• Lost throttle response

• Reduced power

• Higher emissions

• Lower fuel economy

Your finish might look flawless, but if the internals are gummed up? You're leaving performance on the table.

Where Our Additives Come In

We brought the same mindset we use on coatings—precision, power, no compromise—and applied it to internal chemistry.

Our fuel and oil additives are engineered to:

• Dissolve carbon deposits

• Restore fuel atomization

• Clean oil passages

• Reduce internal friction

• Extend the life of engine components

This isn't snake oil. It's science. Lab-developed. Track-tested.

Better Flow = Better Performance

A clean engine breathes better. Burns cleaner. Runs cooler.

Our additives are built to restore what your engine's lost over time—without a teardown.

• Fuel system cleaner improves combustion

• Oil system cleaner frees up flow

• Octane booster sharpens ignition and throttle feel

You feel it where it counts: in acceleration, responsiveness, and consistency.

Real Maintenance Goes Beyond Oil Changes

Changing your oil is smart. But it's not enough. Internal deposits form slowly, over thousands of miles, and oil alone doesn't break them down.

Our additives go where oil can't—cleaning the systems that affect performance, longevity, and efficiency.

Run clean, and everything else runs better.

Built for Drivers Who Give a Damn

This isn't for people who just want a shiny hood. It's for people who want the whole machine dialed in. Who care what goes into their fuel system. Who feel every hesitation and know when something's off.

We built these additives for you.

Under the Hood. Over the Top.

Explore our Performance Additives Range—for engines that deserve more than stock chemistry.

Shelby Additives. Clean power starts inside.