Common signs include delayed gear engagement, grinding or whining noises, fluid leaks, burning smell, and slipping gears. If you experience any of these symptoms, have your transmission inspected promptly to prevent further damage.

Most manufacturers recommend changing differential fluid every 30,000 to 60,000 miles. However, if you frequently tow heavy loads or drive in extreme conditions, more frequent changes may be necessary.

An open differential sends power to the wheel with least resistance, while a limited-slip differential distributes torque between both wheels for better traction. Limited-slip differentials are preferred for performance driving and off-road use.

Yes, upgrading to an aluminum or carbon fiber driveshaft reduces rotational mass, improving acceleration and fuel efficiency. Aftermarket driveshafts are also stronger and better suited for high-horsepower applications.

Signs include clicking noises when turning, vibration during acceleration, and grease leaking from CV boots. Worn axle shafts can compromise vehicle safety and should be replaced immediately.