Aeroshell Turbine Oil 555 is a 5-centistoke synthetic lubricating oil for gas turbine engines, helicopter transmissions and gearboxes. This product is formulated with a blend of high quality hindered polyol esters with exceptional thermal stability properties and uses a unique enhanced additive package to improve load carrying and anti-wear performance. These carefully selected components result in a product which has superior load carrying performance, corrosion protection, and excellent thermal-oxidative stability. It also has the following benefits: