Transmission & Differential Services

Maintaining your vehicle’s health is crucial for its longevity and performance. One of the essential services every car owner needs is a regular oil change. At RG3 Automotive in San Antonio, TX, we provide top-notch oil change services that ensure your engine runs smoothly and efficiently. Our expert technicians use the highest quality oils and filters to keep your vehicle in optimal condition.

Expert Transmission Services

Transmission Diagnostics and Inspection

Accurate diagnosis is crucial for effective transmission repair. At RG3 Automotive, we utilize state-of-the-art diagnostic tools to identify transmission issues quickly and efficiently. Our thorough inspections ensure that every problem is addressed, preventing further damage and costly repairs down the road.

Transmission Repair and Rebuild

Transmission problems can significantly impact your vehicle's performance. Our experienced technicians at RG3 Automotive specialize in transmission repair and rebuild services, restoring your vehicle's functionality and ensuring smooth gear shifts. We use high-quality parts and follow industry best practices to guarantee long-lasting results.

Transmission Fluid Exchange

Maintaining the right transmission fluid levels is essential for optimal performance. Our transmission fluid exchange service helps prevent overheating and ensures smooth operation. Regular fluid checks and changes are vital to extending the life of your transmission.

Differential Services

Differential Diagnostics and Repair

Differential problems can lead to uneven tire wear and compromised handling. At RG3 Automotive, we offer comprehensive differential diagnostics and repair services. Our experts accurately identify and fix issues, ensuring your vehicle handles smoothly and safely.

Differential Fluid Exchange

Just like your transmission, the differential requires proper lubrication. Our differential fluid exchange service helps prevent wear and tear, ensuring the longevity and reliability of your vehicle's differential.

Why Choose RG3 Automotive?

Skilled and Experienced Technicians

At RG3 Automotive, our technicians are highly skilled and experienced in handling all types of transmission and differential services. We continually update our knowledge and skills to stay ahead of industry advancements, ensuring you receive the best service possible.

State-of-the-Art Equipment

We invest in the latest diagnostic and repair equipment to provide accurate and efficient services. Our commitment to using cutting-edge technology ensures that your vehicle receives top-notch care.

Customer-Centric Approach

Your satisfaction is our top priority. We offer transparent communication, fair pricing, and personalized service to meet your unique needs. At RG3 Automotive, we treat every customer like family.

Convenient Location

Located at 6715 Montgomery Dr, San Antonio, TX 78239, RG3 Automotive is easily accessible for residents of San Antonio and surrounding areas. Our convenient location makes it simple for you to drop off your vehicle and receive prompt service.



Common signs include difficulty shifting gears, slipping gears, unusual noises, and leaking transmission fluid. If you notice any of these symptoms, it’s important to get your transmission checked by a professional.

It’s generally recommended to change your transmission fluid every 30,000 to 60,000 miles. However, this can vary depending on your vehicle’s make and model. Check your owner’s manual or consult with our experts at RG3 Automotive for specific recommendations.

The differential allows your vehicle’s wheels to rotate at different speeds, which is essential for smooth cornering. It helps distribute power from the engine to the wheels, ensuring optimal performance and handling.

Signs that your differential may need servicing include unusual noises, vibrations, or difficulty turning. If you experience any of these issues, it’s important to have your differential inspected by a professional.

Driving with a leaking transmission is not recommended, as it can lead to severe damage and costly repairs. If you notice transmission fluid leaks, it’s best to have your vehicle inspected and repaired as soon as possible.

Regular maintenance helps prevent major issues, extends the life of your transmission and differential, and ensures your vehicle runs smoothly. At RG3 Automotive, we offer comprehensive maintenance services to keep your vehicle in top condition.


For reliable transmission and differential services in San Antonio, look no further than RG3 Automotive. Our team of experienced technicians is dedicated to providing top-quality service to keep your vehicle running smoothly. Visit us at 6715 Montgomery Dr, San Antonio, TX 78239, or contact us today to schedule an appointment.

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