Liqui-Moly has released a new additive that is safe to use for modern, high-performance engines with direct injection. DIJectron by Liqui-Moly contains polyetheramine (PEA) as an active ingredient. Active PEA is a highly effective cleaning chemical that removes even stubborn deposits from injectors, pistons and combustion chambers. DIJectron can be used at any inspection, and only has to be added every 2,400 miles (3,862 kilometres). It is suitable for all cars with a 4-stroke gasoline engine, as well as for cars with intake-manifold injection.