Which is the correct lubricant for the front axle on a rear-wheel-drive car?

The correct lubricant for the front axle on a rear-wheel-drive car is wheel bearing grease. This type of grease is specifically formulated to withstand the high pressures and temperatures that occur in wheel bearings and axles. It provides excellent lubrication, reduces friction, and helps to prevent wear on the metal surfaces. Wheel bearing grease also has properties that ensure it remains stable under varying temperatures, preventing it from breaking down or leaking out, which is crucial for maintaining the integrity of the axle assembly.

Other lubricants listed, such as motor oil or transmission fluid, are not ideal for this application. Motor oil is designed for engine components operating at different temperatures and pressure conditions, while transmission fluid is also formulated for specific conditions in automatic transmissions and does not have the same adhesive properties needed to stay in place under the stresses found in axles. White lithium grease, although useful for certain applications, doesn’t provide the necessary consistency and longevity for axle lubrication in this context.