Drivers should raise the front wheels of front-wheel-drive vehicles with tow dollies while towing them to protect against transmission damage. Individuals should not raise the front wheels of rear-wheel- or all-wheel-drive vehicles without disconnecting their transmissions or, for manual transmissions, shifting into neutral gear.
Most automatic vehicles lubricate their transmissions while the engine is running, and if their driving wheels are spinning with the engine off, serious damages occur. Drivers of rear-wheel-drive vehicles using tow dollies can install drive shaft coupling devices to switch vehicles from driving mode to towing mode, which eliminates the need to disconnect their transmissions. Drivers unsure about their vehicles' drive types should consult their manuals for towing instructions.