Vegetable oil fuel system for diesel engines consisting of a diesel and vegetable oil system. When started cold, the engine is supplied with diesel and when the engine reaches a certain temperature, which depends on the engine design, at this point the fuel supply will switch to vegetable oil. During normal operating conditions, the engine runs on vegetable oil, which is heated by a heat exchanger which is supplied by engine cooling water. In addition, the vegetable oil will be electrically heated when passing through the filter during cold start conditions.
A balance ring for a gas turbine engine has a ring shaped body with a first radial thickness, an anti-rotation tab extending outward from the body and at least one millable balancing feature connected to the body.