Plastic Manifold Cleaner Suitable for those gasoline engines having the manifold made by plastic instead of aluminium as PMC is less aggressive than AMC . Cleans all sludge and residues generated by the recycling of exhaust emissions or by blow-by from the crankcase. Besides to the manifold are clean also the EGR, turbo, intercooler and the combustion chamber as well. Major air volume means better combustion process.