This listing is for 1 Quart of SAE 80W-90 Gear oil for use on Oil Bath trailer hubs and drums. This product does have a variety of other uses such as differentials and steering gears. However, it is also ideal for use on trailer wheel bearings when using oil bath hubs and drums. This bottle features an easy pour and fill spout and handle for repeated filling when needed. Coastal products feature superior wear resistant qualities and loading carrying ability over competitive brands. Another important feature is the ability to minimize resistance due to bearing and spindle contact. This allows for the smooth rotation of your trailers wheel bearings, even at higher speeds. In addition, Coastal gear oil has corrosive resistant compounds to protect your trailers wheel bearings against breakdown and chemical oxidation.