Why choose the RAC for an automatic transmission fluid top-up?

At the RAC, we've got over 125 years' experience helping UK drivers. We have the skills and knowledge to keep your vehicle running. We'll give you results you can rely on at a price you can afford.

Close up of an RAC Mobile Mechanic underneath a car

Book an automatic transmission fluid replacement

To help make sure you’re getting smooth gear shifts and a long transmission life you need to maintain your automatic transmission fluid. So when you need to, make sure you have that old fluid drained and refilled at an RAC Approved Garage.

Any work done will meet the high standards set by the RAC.
We’re friendly, straightforward and jargon-free

Book a diagnostic

A mechanic will check your car for faults and talk you through any repairs you might need. There are various ways to check for faults, which could include a physical examination or plugging in to check your car’s onboard engine management system.

We’ll look for any mechanical or electrical problems. If we need to, we’ll also check your car’s onboard engine management system. Depending on your car and issue, this will usually include: – Engine – Power steering – Brakes – Transmission – Exhaust system – Fuel injection system – Cooling system and air flow – Sensors

And it’s not just automatic transmission fluid replacements that we do in Swansea

RAC Approved Garages offer MOTs and services. Our professional mechanics have the expertise and experience to make sure your vehicle is operating safely and efficiently – results you can rely on at a price you can afford.

Try one of our RAC Approved Garages

Manselton MOT Centre

5.0/5

Manselton MOT & Service Centre is a family run vehicle service and testing station, focused on providing you with truly outstanding garage services at the right price. At Manselton MOT & Service Centre, our experts can perform various garage services on your car or van. We can work on all makes and models of cars and light commercial vehicles. We will run tests to pinpoint the problem, fix the issue for you, and perform general maintenance on the rest of the vehicle to keep you running longer. Our general car and van servicing also covers tyre fitting and engine management. We aim to be your one-stop-shop for all of your automotive needs.
Unit 3 Cambrian Yard, David Street, Manselton, SA58NX

Keep Driving Auto Ltd

4.9/5

Here at Keep Driving Auto we provide a first rate, friendly garage service. Serving the Swansea area, located in Llansamlet within easy reach of both the city Centre and Swansea Enterprise Park.
Unit 7 St Lukes Court, Clarke Way Swansea Enterprise Park, Llansamlet, Swansea, SA17ER

C G AUTO REPAIRS

4.7/5

Here at C&G AUTO REPAIRS we have over 20 years experience in Diagnostics and repairs on all make and model vehicles. we can do anything from timing belt renewals to clutch replacement, DPF cleaning. you name it we can give you a quote At Eurorepar Car Service, we’re all about keeping you and your car moving with confidence. As a trusted network of local garages, we provide high-quality car maintenance and repairs tailored to your needs – all at competitive prices. With our exclusive Brakes for Life program and a 2-year parts and labour warranty, you can drive away knowing you’re covered for the long haul.* Ask your Eurorepar Car Service Centre to fit Eurorepar branded parts to qualify. Claims under the 2-year parts and labour warranty must be made at a Eurorepar Car Service Centre. Discover expert care, unbeatable value, and peace of mind – all under one roof. Ready to experience the Eurorepar difference? Request a quote or give us a call today! *Terms and conditions apply.
Unit F1, Sa1 Business Park, Langdon Road, SA18DB

Eastlake Garage

4.7/5

We are a well-established company which has been in operation since 2010. As well as being a fully stocked garage, we also have fully stocked mobile workshop vans and we carry out both in house and mobile repairs and servicing for our customers in and around South Wales. As part of our ongoing expansion of our company we can now offer a 24-hour callout service within the Mid Glamorgan area - other areas are covered but charges are applicable. We are AA and RAC certified to carry out their breakdown and repair work as well as being Trading Standards approved and members of the Motor Ombudsman adhering to their strict code of conduct at all times. We are also Afilliated with the IMI We can offer our customers a free vehicle collection and delivery service within 20 miles of the garage, and we also offer discounts to NHS and Emergency Service staff members upon valid photographic identification.
Eastlake Garage, Gaens Quarry, Porthcawl Road, South Cornelly, Bridgend, CF334RN

Gorseinon Tyre & Service Centre.

4.3/5

Gorseinon Tyre & Service Centre is a family run business and we have over 30 years experience within the motor trade offering our customers high quality service at affordable prices. We specialise in servicing all makes of cars and vans and we have the latest diagnostic tools to quickly identify and resolve your vehicle problems. We have two garages located in walking distance from one another. Our Tyre garage and our Main Workshop and MOT station. We stock a large amount of tyres so no appointment is necessary - just call in and we will take care of it. We offer a friendly waiting area for customers. In addition to this we also specialise in exhausts, batteries, clutches, brakes, car repairs, engine diagnostics, auto electrical. We offer a local drop off and collection service to our customers so if you are living in the area of working and can’t get back- please just give us a call and we will take care of it!
Old Brisco Yard Gorseinon Road, Penllergaer, Swansea, SA49GE

Frequently asked questions on automatic transmission fluid change

Automatic transmission fluid should be changed every 30,000 to 60,000 miles. However, always check your vehicle’s manual for the manufacturer’s recommendation. Your driving habits and the conditions you drive in will affect how quickly your fluid degrades. Regular checks and following the manufacturer’s guidelines will help to make sure your transmission stays in good condition.

Some people believe that changing old transmission fluid can cause issues, especially in high-mileage vehicles. This myth stems from the fact that when automatic transmission fluid is changed, the new fluid can sometimes dislodge debris, causing problems. However, this is usually due to debris build-up.

If you don’t change the automatic transmission fluid, it can become contaminated and lose its effectiveness, leading to transmission wear and potential failure. Over time, dirty automatic transmission fluid can cause increased friction, overheating, and significant transmission damage. Regular changes will help you avoid costly repairs and keep the transmission running smoothly.

Fresh automatic transmission fluid is bright red and clear. If your fluid looks clean and smells fresh, it’s been changed recently. You can also check the service records for confirmation. If in doubt, ask your mechanic to check.

Signs that you might need a transmission flush include:

  • Slipping gears: The transmission struggles to stay in gear.
  • Delayed gear engagement: There’s a noticeable delay when shifting gears.
  • Overheating: The transmission becomes excessively hot.
  • Unusual noises: Grinding or whining sounds from the transmission.
  • Dirty fluid: The automatic transmission fluid is dark or discoloured.

A flush can help remove contaminants and restore the fluid’s effectiveness.

It’s often best to have a professional do it. The process can be messy and requires proper disposal of old fluid. Professional services also include checks and diagnostics to ensure everything is working.

Transmission fluid is used in automatic transmissions, while gearbox oil is used in manual transmissions. They’re made to do different jobs, so they’re not interchangeable. Automatic transmission fluid is designed for the hydraulic and cooling needs of automatic transmissions, while gearbox oil provides the necessary lubrication for manual transmissions.

An automatic transmission flush is a service where all the old automatic transmission fluid is removed, and new fluid is added. It helps remove contaminants and old fluid that might be stuck in the transmission. It’s more thorough than a simple fluid change and can help restore the transmission’s performance.

Yes, changing the automatic transmission fluid is necessary to keep your vehicle’s transmission running well. Over time, the fluid degrades and becomes less effective, leading to potential transmission problems. Regular changes help the transmission run smoothly and can prevent costly repairs down the line.

To extend the life of your automatic transmission fluid:

  • Regular maintenance: Follow the manufacturer’s guidelines for fluid changes.
  • Avoid excessive heat: Don’t overload your vehicle or tow heavy loads when you don’t have to.
  • Check for leaks: Regularly inspect your vehicle for fluid leaks.
  • Smooth driving: Avoid aggressive driving habits that can overheat the transmission.

Proper care and regular upkeep can significantly extend the life of your automatic transmission fluid and transmission.

An automatic transmission fluid change will typically take about 1 to 2 hours, depending on the vehicle and the service provider. This includes draining the old fluid, replacing the filter (if necessary), and refilling with new fluid. If more services or diagnostics are needed, it could take longer.

If your transmission fluid is low:

  • Check for leaks: Look for any visible leaks under the car.
  • Top up the fluid: Use the right type of fluid for your vehicle.
  • Monitor the fluid level: Regularly check the fluid level to make sure it stays within the recommended range.
  • Consult a mechanic: If the fluid level continues to drop speak to a mechanic so that they can inspect and fix any issues.