Fuel System Cleaner

Fuel system cleaner is the concentrated stuff you run through a full tank to scrub carbon deposits off injectors, intake valves, and combustion chambers — stronger than a routine additive, meant as an occasional deep clean. Reach for it if you're noticing rough idle, hesitation, dropping mpg, or you just hit 60k miles on a car that's never had the fuel system touched. One bottle per tank, drive normally until empty. PEA-based formulas (polyetheramine) are the ones that actually remove deposits, not just coat them.