Gearbox oil HD90GL4.1L is suitable for manual transmissions of classic vehicles from a well known French manufacturer. The oil supports lubrication of gears and bearings in gearboxes under high load. The product forms a stable oil film and helps to limit wear and noise. Its viscosity is matched to operation at different running temperatures. The oil is suitable for transmissions with straight and helical gears without extreme pressure additive levels. It can be used in older transmissions where a mineral oil with GL-4 performance level is specified by the vehicle manufacturer.
