Mobil SHC Gear 46M is a speciality ultra high viscosity lubricant primarily intended for use in heavily loaded, low and medium speed gears where boundary lubrication conditions prevail. Mobilgear SHC 46M is formulated from wax-free synthetic base stocks which have exceptional oxidation and thermal properties and remarkable excellent low-temperature fluidity. The combination of a naturally high viscosity index and a unique additive system enables the product to provide outstanding performance under severe high and low temperature operating conditions. The base stocks have inherently low traction properties which result in low fluid friction in the load zone of non-conforming surfaces such as gears. Reduced fluid friction produces lower oil operating temperatures and improved gear efficiency. Mobilgear SHC 46M exceeds Falk minimum viscosity requirements for intermittent lubrication of gears. Mobilgear SHC 46M does not contain any solvent.