ENERGEN will not harm engines or their components. In fact ENERGEN has been proven to do just the opposite by improving combustion to the point where abrasive hard carbon build-up is virtually eliminated. As a result, engine wear related to hard carbon build-up (rings, injectors, valves and liners etc…) is reduced. Further oil contaminants are reduced, cutting down on the wear to lower engine components.
Also with diesel engines starter motors respond quicker reducing replacement frequencies.