Hybrid Oil Boat Trailer Axle Hub Vault Pressurized Bearing OilPart#: 07036UAt ambient temperatures the oil is thick, with a viscosity approaching . As the bearing temperature RRISEs during towing, the oil thins out, replenishing the bearings with lubricant and dissipating heat. For optimal performance,This is the same as "The Vault" Hybrid Oil. now owns the oil and has their brand name on it.same great hybrid oil just with a different label!Features:No service requiredHybrid OilThick like when at ambient temperaturesFor /Trailer Axles using Vault Hubs