Mercury Power Tune Internal Engine Cleaner

The Mercury Marine 858080K03 Power Tune Internal Engine Cleaner is a genuine Mercury OEM engine decarbonising treatment designed to remove carbon, gum and varnish deposits from internal engine components. Over time, normal engine operation can cause carbon accumulation within combustion chambers, intake systems and exhaust passages, leading to reduced performance, poor throttle response and decreased fuel efficiency.

Power Tune is formulated to break down and remove these performance-robbing deposits, helping restore lost power, improve fuel and air flow, reduce engine hesitation and promote smoother engine operation. It is particularly effective on engines that experience extended idling, low-temperature operation or use fuel that contributes to deposit formation.

The aerosol spray formula is easy to apply through the air intake system and is suitable for routine preventative maintenance as well as restoring performance on engines affected by carbon build-up. Mercury recommends Power Tune as part of a regular maintenance program to help keep engines running at peak efficiency.

Safe for use in both carburetted and fuel-injected petrol engines, including modern catalysed engines, Power Tune is commonly used on Mercury outboards, MerCruiser sterndrives and inboard engines.