16 Oz. Engine Cleaner

The 16 Oz. Engine Cleaner by CYCLO is the professional-grade solution every serious mechanic and automotive enthusiast reaches for when carbon buildup, varnish, and deposits threaten engine efficiency. Whether you're restoring a neglected engine, maintaining high-performance modifications, or simply extending the life of your daily driver, this concentrated formula dissolves stubborn internal contaminants that rob horsepower and fuel economy. Engine cleaner of this caliber is essential maintenance for any vehicle that has accumulated miles without proper internal cleaning.

CYCLO's formulation works by chemically breaking down lacquer, sludge, and combustion residues clinging to cylinder walls, valve seats, and fuel injector tips—the very deposits that cause lean-running conditions, rough idle, and lost compression. The 16 oz. concentrate is engineered to flow through the fuel system and crankcase without damaging gaskets, seals, or precision engine components, making it safe for regular use in both naturally aspirated and forced-induction applications. Its potent surfactant technology penetrates carbon layers that mechanical cleaning cannot easily reach, restoring factory combustion efficiency and reducing emissions in the process.

Mechanics trust CYCLO engine cleaner for pre-diagnostic fuel system flushes, turbocharger carbon removal, and preventive maintenance on modified engines where fuel quality and combustion cleanliness directly impact reliability and power output. A single 16 oz. bottle treats multiple fuel tanks or crankcase applications, making it economical for both professional shop use and home garage applications. Simply add to fuel tank or oil (depending on application) and run the engine through normal driving cycles to allow the cleaner to circulate and dissolve accumulated deposits, with visible performance improvements often noticed within the first tank of fuel.