the dual fuel internal combustion engine 1 may be sized and configured to be used e g in vessels larger ships or in power plants dual fuel internal combustion engines of such a size may have a power output of more than 500 kw cylinder with 12 to 20 cylinders in general dual fuel internal combustion engines may further be embodied by a multi cylinder bank dual fuel engine which may be selected from the group of engines consisting of radial engines opposed engines v type engines in line engines and w type engines herein the term u201c internal combustion engine u201d may refer to internal combustion engines which may be used as main or auxiliary engines of stationary power providing systems such as power plants for production of heat and or electricity as well as in ships vessels such as cruiser liners cargo ships container ships and tankers fuels for internal combustion engines may include diesel oil marine diesel oil heavy fuel oil alternative fuels or a mixture thereof and natural gas in addition the term u201c internal combustion engine u201d as used herein is not specifically restricted and comprises any engine in which the combustion of a fuel occurs with an oxidizer to produce high temperature and pressure gases which are directly applied to a movable component of the engine such as pistons or turbine blades and move it over a distance thereby generating mechanical energy thus as used herein the term u201c internal combustion engine u201d comprises piston engines and turbines medium speed internal combustion engines may be large stand alone engines that therefore provide reasonable access to the end sides of the engine block although the preferred embodiments of this invention have been described herein improvements and modifications.