Aluminium Manifold Cleaner Suitable for gasoline engines to clean the intake manifold from sludge and residues which limit the air flux into the combustion chamber. This problem is particularly marked on those engines subject to a consistent exhaust gas recycling . The situation cold be even worst in case of excessive blow-by from the crankcase. Besides to the manifold are clean also the EGR valve, the turbo and intercooler as well. Major air volume means better combustion process.